Free Online Calculators
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Every calculator is organized by category so you can get to the right tool quickly. No sign in. No login. No account required.
Money & Taxes
Estimated Tax Refund
Estimate federal tax outcome from W 2 income, withholding, AGI, deductions, dependents, and business profit or loss.
Retirement
Project retirement savings, contributions, growth, inflation, retirement income, and drawdown.
Percentage Split
Split money, percentages, or shared amounts quickly and clearly.
Currency Converter
Convert money between currencies for planning and comparison.
Loan
Model payment, total interest, payoff timing and the impact of extra monthly payments for a fixed rate installment loan.
Auto Loan
Estimate amount financed, monthly payment, sales tax, total interest and total vehicle cash outlay.
Credit Card Payoff
Estimate payoff time, total interest and the savings created by increasing a fixed monthly credit card payment.
Compound Interest
Project investment or savings growth with recurring contributions, variable compounding frequency and a clear contribution versus growth breakdown.
Savings Goal
Estimate how long it may take to reach a savings goal and how much monthly saving is required by a target date.
APY
Convert a nominal annual interest rate into effective APY for different compounding frequencies and estimate one year interest.
Debt Payoff
Compare debt snowball and avalanche strategies across three debts with monthly minimums and a shared extra payment budget.
Debt to Income Ratio
Calculate front end and back end debt to income ratios and compare current debt load with common underwriting reference points.
Emergency Fund
Build an emergency fund target from essential monthly expenses, household stability, dependents and a chosen months of coverage goal.
Sales Tax
Calculate sales tax, pre tax subtotal and final purchase total with optional discounts and quantity.
Investment Return
Measure investment gain, total return and annualized return while accounting for contributions, withdrawals and cash distributions.
Inflation
Model future cost and purchasing power using an assumed inflation rate over a selected number of years.
Real Estate
Mortgage Payment
Estimate monthly mortgage payment including principal, interest, taxes, and insurance inputs.
Home Affordability
Estimate a practical home price range from income, debts, cash, rates, and housing costs.
Property Tax
Estimate property taxes using assessed value, assessment rules, exemptions, and local rates or millage.
Home Buying Out of Pocket
Estimate total cash needed for down payment, closing costs, prepaids, escrow, and other buying expenses.
Rental Property ROI
Estimate rental income, operating costs, cash flow, and return on investment.
Cap Rate
Measure property yield using net operating income and property value.
Cash on Cash Return
Compare annual pre tax cash flow with the cash actually invested.
DSCR
Evaluate property income against debt service and model lender style coverage scenarios.
BRRRR
Model buy, rehab, rent, refinance, and cash remaining in a BRRRR project.
House Flip
Model purchase, renovation, financing, holding and sale costs to estimate flip profit, return and margin of safety.
Maximum Allowable Offer
Estimate a maximum purchase offer from after repair value, target profit, repair costs and transaction costs.
After Repair Value
Estimate after repair value from comparable property values and chosen weighting.
Flip Profit & ROI
Calculate projected flip profit, return on cash invested and profit margin.
Rehab Budget
Build a renovation budget from major work categories, contingency and project overhead.
Real Estate Commission
Estimate listing and buyer side commission amounts and seller proceeds before other closing costs.
Closing Cost
Estimate buyer or seller closing costs using entered fees and percentage based costs.
Rent vs Buy
Compare modeled multi year housing cost for renting versus buying using appreciation, rent growth and ownership costs.
Rental Cash Flow
Calculate gross rent, operating expenses, debt service, monthly cash flow and cash flow margin.
Rental Property Expense
Estimate recurring rental operating expenses, reserves and annual expense ratio.
Vacancy Cost
Estimate annual vacancy loss and effective rental income from rent and vacancy assumptions.
Refinance Break Even
Compare current and proposed mortgage payments and estimate months required to recover refinance costs.
Work & Pay
Work Hours
Calculate regular hours, unpaid breaks, overtime, gross pay, and planning estimates.
Salary and Hourly
Convert annual salary to hourly pay or hourly pay to annual income.
Overtime Pay
Estimate regular and overtime earnings from pay rate and hours.
Bartender Earnings
Track wages, tips, tip outs, and estimated shift earnings.
Entertainer Earnings
Track gross earnings, fees, payouts, and estimated net received.
Truck Driver Load
Model loaded and deadhead miles, fuel, trip costs, gross pay, and estimated trip earnings.
Paycheck
Estimate federal withholding, Social Security, Medicare, state and local withholding and net pay for one paycheck using 2026 federal reference rules.
Take Home Pay
Estimate annual and per paycheck take home pay from salary, pretax benefits, federal taxes, FICA and a user entered state and local rate.
Commission
Model tiered sales commissions with base pay, three commission tiers, bonuses and recoverable or nonrecoverable draws.
PTO
Calculate accrued PTO, available balance, carryover cap impact and the wage value of available paid time off.
Freelance Rate
Calculate a sustainable freelance hourly rate, day rate and project floor from target take home income, overhead, taxes and billable utilization.
Contractor vs Employee
Compare employee compensation with contractor gross revenue and estimate the contractor hourly rate needed to match employee value.
Shift Differential
Calculate regular, evening, night, weekend and overtime earnings with separate differential percentages.
Payroll Cost
Estimate the fully loaded employer cost of an employee from wages, employer taxes, benefits, insurance, retirement, bonus and overhead.
Everyday Life
Monthly Living Expense
Build a complete monthly living expense picture with category totals and annualized costs.
Income and Lifestyle Position
Compare income, living expenses, remaining cash, and financial breathing room.
Vacation Expense
Plan trip costs by traveler, category, activity, daily spend, and contingency budget.
Basic
A fast everyday calculator for arithmetic, percentages, powers, roots, parentheses and memory style calculations.
Percentage
Solve percent of, percent change, increase, decrease and what percent questions from one specialized tool.
Age
Calculate exact age in years, months and days, total elapsed days, next birthday and milestone ages.
Date Duration
Measure the exact time between two dates with total days, business days, calendar weeks and a calendar year month day breakdown.
Time Duration
Calculate elapsed time between clock times including overnight shifts, decimal hours, minutes and payroll friendly totals.
Tip
Calculate tip, check total and per person split with tax aware options for restaurants, services and group bills.
Discount
Calculate sale price, savings, stacked discounts, quantity totals and sales tax after discount.
Unit Converter
Convert common length, weight, volume and temperature units with automatic compatibility checks and precise results.
Fuel Cost
Estimate gallons, fuel spend, tolls and all in driving cost for one trip or repeated trips.
MPG
Calculate miles per gallon, liters per 100 kilometers and fuel cost per mile from actual fill up data.
Bill Split
Split a bill by people with tax, tip and optional unequal share weighting.
Birthday
Calculate age, next birthday timing and total days lived from a birth date.
Days Until
Calculate calendar days, weeks and approximate months until a future date.
Business Days
Count weekdays between two dates with optional entered holiday days.
Hours & Minutes
Add or subtract hour and minute durations and convert the result to decimal hours.
Cooking Measurement Converter
Convert common cooking volume measurements between teaspoons, tablespoons, cups, fluid ounces and milliliters.
Recipe Serving Size
Scale ingredient quantities from an original serving size to a new serving size.
Grocery Unit Price
Compare two grocery package prices by unit cost.
Electricity Cost
Estimate electricity use and cost from appliance wattage, runtime and energy price.
Appliance Energy Cost
Estimate daily, monthly and annual appliance energy cost.
Water Usage
Estimate household water use from flow rate, duration and frequency.
Commute Cost
Estimate monthly commute fuel, parking and toll cost from distance and workdays.
Road Trip Cost
Estimate fuel, lodging, food, tolls and other road trip costs per traveler.
Car Depreciation
Model vehicle value after annual depreciation and calculate total value lost.
Wedding Budget
Build a wedding budget with major expense categories, contingency and per guest cost.
Party Budget
Build an event budget with venue, food, drinks, entertainment, decor and contingency.
Christmas Budget
Build a holiday spending budget with gifts, food, travel, decor and contingency.
Gift Budget
Allocate a total gift budget across recipients and calculate remaining budget.
Shared Household Bills
See how shared household bills are divided between two people.
Funeral & Burial Cost
Plan funeral, burial, memorial, wake and repast expenses against available funds.
Ultimate Event Planning
Build a complete event budget with guest costs, vendors, balances and contingency.
Wedding Cost
Plan wedding spending, vendor balances and cost per guest.
Birthday Party Budget
Plan birthday party costs by guest, vendor and expense category.
Corporate Event Budget
Model corporate event costs, vendors, staffing and cost per attendee.
Baby Shower Cost
Plan baby shower spending and cost per guest.
New Baby Cost
Estimate one time and recurring costs of preparing for a new baby.
Divorce Transition Cost
Organize estimated transition expenses without providing legal or financial advice.
Senior Living Cost
Compare recurring senior living and care related household costs.
Daycare Cost
Estimate childcare costs by child, schedule and recurring fees.
Moving Cost
Plan moving costs from packing through move in.
Holiday Party Budget
Plan holiday gathering costs by guest and expense category.
Graduation Party Cost
Plan graduation celebration costs and cost per guest.
Family Reunion Budget
Plan reunion costs, shared contributions and cost per attendee.
Anniversary Party Cost
Plan anniversary celebration costs and cost per guest.
Retirement Party Cost
Plan retirement celebration costs by guest and expense category.
Catering Cost
Estimate catering costs from guest count, per person pricing, service, rentals and fees.
Fashion & Sewing
Clothing Size
Estimate general clothing size from bust or chest, waist and hip measurements.
Shoe Size Converter
Convert foot length into estimated US, UK and EU shoe sizes.
Ring Size
Estimate US ring size from finger circumference or ring diameter.
Fabric Yardage
Estimate fabric needed from piece size, quantity, fabric width and allowance.
Embroidery Size & Stitch
Calculate finished design size, stitch count and recommended fabric dimensions.
Bra Size
Estimate a starting US band and cup size from underbust and full bust measurements.
Home & DIY
Paint
Estimate paint quantity and containers from wall area, coats, coverage and waste.
Concrete
Estimate concrete volume with waste allowance from project dimensions.
Flooring
Estimate flooring square footage and packages including waste allowance.
Tile
Estimate tile area and tile quantity including grout gap and waste assumptions.
Wallpaper
Estimate wallpaper coverage and rolls from wall area, roll coverage and waste.
Deck Material
Estimate decking boards, surface area and waste allowance from deck size and board dimensions.
Room Square Footage
Calculate room floor area, perimeter and optional wall area.
Fence
Estimate fence panels or sections, posts and total material length from perimeter and spacing.
Drywall
Estimate drywall sheets from surface area, sheet coverage and waste.
Insulation
Estimate insulation coverage and packages from surface area and package coverage.
Roofing Material
Estimate roof surface material needs using roof area, waste and package coverage.
Lumber
Estimate board feet, linear feet and material cost for dimensional lumber.
Garden & Yard
Mulch
Estimate mulch cubic feet, cubic yards and bags from bed area and depth.
Soil
Estimate soil volume and bag quantity from garden area and fill depth.
Raised Garden Bed Soil
Calculate soil volume for multiple raised beds with waste allowance.
Plant Spacing
Estimate plants that fit in a rectangular bed using row and in row spacing.
Garden Plant Quantity
Estimate plant quantity and row layout from available planting dimensions.
Seed Spacing
Estimate seed positions from bed dimensions and chosen spacing.
Garden Row
Calculate number of rows, total row length and approximate planting positions.
Square Foot Gardening
Estimate square foot sections and plant capacity using plants per square foot.
Compost
Estimate compost volume and bags from application area and depth.
Topsoil
Estimate topsoil cubic yards and bags from area and application depth.
Potting Soil
Estimate potting mix required for multiple round or rectangular containers.
Planter Volume
Calculate container volume for round or rectangular planters.
Fertilizer Quantity
Calculate fertilizer product quantity from area and the application rate printed on your product label.
Lawn Seed
Calculate grass seed quantity from lawn area and the seeding rate you enter.
Sod
Estimate sod area, pieces or rolls and waste allowance.
Grass Seed Overseeding
Calculate overseeding quantity using lawn area and your selected product or seed rate.
Irrigation Water
Convert irrigation depth over an area into gallons of water.
Drip Irrigation
Estimate drip system water use from emitters, emitter flow and runtime.
Rainfall to Gallons
Convert rainfall depth over a catchment area into potential gallons of water.
Rain Barrel
Estimate roof runoff capture and storage needed for a rainfall event.
Landscape Rock
Estimate landscape rock volume and approximate tons using entered material density.
Gravel
Estimate gravel cubic yards and approximate tons using entered density.
Garden Border
Calculate edging length from rectangular bed dimensions and number of beds.
Fence Post Spacing
Estimate residential fence posts and sections from fence length and target spacing.
Tree Spacing
Estimate tree capacity for a planting area using row and tree spacing.
Orchard Spacing
Estimate orchard tree population from acreage or rectangular dimensions and spacing.
Lawn Area
Calculate lawn area and perimeter from length and width.
Garden Bed Area
Calculate garden bed square footage and perimeter.
Lawn Mowing Time
Estimate mowing time from lawn area, mower width, speed and efficiency.
Hose Fill Time
Estimate time to fill a pool, tank or container from volume and hose flow rate.
Sprinkler Runtime
Estimate sprinkler runtime from desired water depth and measured application rate.
Soil Amendment
Calculate soil amendment quantity from area and the application rate you enter.
Paver Patio
Estimate paver quantity, surface area and waste allowance.
Garden Path Material
Estimate path material volume from path dimensions and depth.
Hedge Plant
Estimate shrubs needed for a hedge from total length and plant spacing.
Farm & Agriculture
Acreage
Convert field dimensions into square feet, acres and hectares.
Field Area
Calculate agricultural field area in acres, square feet and hectares.
Plants Per Acre
Estimate plants per acre from row spacing and in row spacing.
Plant Population
Estimate total field plant population from acreage and plant spacing.
Crop Row Spacing
Estimate number of crop rows and total row length from field width, length and row spacing.
Total Crop Row Length
Calculate total linear crop row length from field dimensions and row spacing.
Seed Rate
Calculate total seed required from acreage and the seeding rate you enter.
Seed Quantity
Calculate seed quantity for a field from acreage and your chosen seed rate.
Seeding Cost
Calculate total seed cost from acreage, seeding rate and seed price.
Fertilizer Application
Calculate fertilizer product quantity from acreage and the application rate you enter.
Fertilizer Cost
Estimate fertilizer cost from acreage, entered application rate and product cost.
Irrigation Requirement
Convert an entered irrigation depth over acres into acre feet and gallons.
Irrigation Flow Rate
Calculate required flow from volume and application time.
Water Application Time
Estimate irrigation time from target water volume and system flow rate.
Farm Pond Volume
Estimate pond volume in acre feet and gallons from surface area and average depth.
Pasture Size
Calculate pasture area from dimensions and convert to acres.
Pasture Stocking
Estimate supported animal units from pasture acres and a stocking rate you enter.
Grazing Rotation
Estimate paddock count and grazing cycle timing from herd needs and recovery assumptions.
Hay Needed
Estimate hay needed over a feeding period using herd size and entered daily intake.
Hay Bale
Convert total hay requirement into number of bales from average bale weight.
Livestock Feed
Estimate total feed from animal count, daily feed per animal and feeding days.
Feed Cost
Estimate total feed cost from feed quantity and unit price.
Feed Conversion
Calculate feed conversion ratio from feed consumed and weight gain.
Cattle Weight Estimate
Estimate cattle weight from heart girth and body length using a common dimensional estimate.
Livestock Water Requirement
Estimate herd water volume from animal count and the daily gallons per animal you enter.
Farm Fence
Estimate farm fence length, posts, strands and wire length.
Farm Fence Post
Estimate fence posts from perimeter and target spacing.
Farm Fuel Cost
Estimate fuel use and cost from machine hours, consumption rate and fuel price.
Tractor Fuel Cost
Estimate tractor fuel volume and operating fuel cost.
Equipment Operating Cost
Estimate hourly and per acre equipment cost from fuel, labor, maintenance and ownership costs.
Crop Yield
Calculate yield per acre and total production from harvest quantity and acres.
Yield Per Acre
Calculate production per acre from total harvested quantity and field acreage.
Crop Revenue
Estimate gross crop revenue from yield, acreage and sale price.
Crop Profit
Estimate crop gross revenue, variable cost, fixed cost and profit per acre.
Break Even Crop Price
Calculate sale price needed to cover total production cost at an expected yield.
Break Even Yield
Calculate yield required to cover production costs at an entered sale price.
Farm Loan
Estimate payment, total interest and annual debt service for a fixed rate farm loan.
Land Cost Per Acre
Calculate land purchase cost per acre and total cost including entered transaction costs.
Land Rent Per Acre
Calculate total cash rent and effective rent per usable acre.
Grain Bin Capacity
Estimate cylindrical grain bin volume and approximate bushel capacity.
Silo Capacity
Estimate cylindrical silo volume from diameter and fill height.
Harvest Capacity
Estimate acres harvested per hour and hours required from machine width, speed and field efficiency.
Planting Capacity
Estimate effective planting capacity and time required for a field.
Sprayer Tank Coverage
Calculate acres covered per tank from tank gallons and entered gallons per acre.
Sprayer Refill
Estimate number of tank fills required for a field.
Grain Drying Cost
Estimate drying cost from grain quantity, moisture reduction and entered cost per point.
Grain Shrink
Estimate adjusted grain weight after moisture shrink using entered shrink percentage.
Farm Labor Cost
Estimate labor cost from workers, hours, wage and payroll burden rate.
Field Work Cost Per Acre
Estimate total and per acre field operation cost from labor, fuel and equipment cost.
Custom Farming Rate
Build a custom field service rate from operating cost, overhead and target margin.
Farm Cash Flow
Calculate operating cash flow from farm receipts, operating expenses, debt service and capital spending.
Farm Profit Per Acre
Calculate profit per acre from revenue and cost totals.
Marketing & Business
ROAS
Measure return on ad spend from advertising cost and attributed revenue.
Conversion Rate
Measure the percentage of visitors or leads that complete a desired action.
CPC
Calculate average cost per click from ad spend and clicks.
CPM
Calculate cost per one thousand impressions.
CTR
Calculate click through rate from clicks and impressions.
Cost per Lead
Calculate average marketing cost for each lead generated.
CPA
Calculate average cost for each acquisition or conversion.
Break Even ROAS
Estimate the ROAS required for campaign revenue to cover the modeled economics.
Funnel Revenue
Model traffic, conversion stages, customers, revenue, and campaign contribution.
Ad Spend Scenario
Compare ad budget, traffic, conversion, and revenue scenarios before spending.
Profit Margin
Calculate gross profit, operating profit and profit margins from revenue, cost of goods sold and operating expenses.
Markup
Compare markup and margin, calculate selling price from cost and target markup, and see profit per unit.
Break Even
Calculate contribution margin, break even units, break even revenue and units required for a target profit.
Gross Profit
Calculate net sales, gross profit and gross margin after returns, discounts and cost of goods sold.
ROI
Measure net gain, ROI, annualized ROI and payback period from an investment and its modeled returns.
Business Loan
Model monthly payment, total interest, fee adjusted financing cost and debt service for a fixed rate business loan.
Revenue Growth
Calculate period growth, absolute revenue increase and compound annual growth rate across multiple years.
Customer Lifetime Value
Estimate gross margin adjusted customer lifetime value from order value, purchase frequency and customer lifespan.
Customer Acquisition Cost
Calculate blended CAC, LTV to CAC ratio and simple payback period from marketing and sales spend.
Inventory Turnover
Calculate inventory turnover, days inventory outstanding and average monthly cost of goods flow.
AI & Automation
Creators & Ecommerce
Influencer Rate
Build a sponsorship rate scenario from reach, engagement, deliverables, and usage rights.
TikTok Earnings
Model creator earnings using your own audience, payout, and sponsorship assumptions.
Digital Product Profit
Estimate digital product revenue, fees, costs, margin, and profit.
Ecommerce Profit
Calculate ecommerce net profit after product cost, platform fees, shipping, advertising and refunds.
Product Pricing
Calculate a selling price from cost, desired margin, transaction fees and shipping subsidy.
Product Margin
Calculate gross profit, gross margin and markup per product.
Marketplace Fee
Estimate marketplace and payment fees from order value and entered fee rates.
Shipping Profit
Compare shipping collected with carrier and packaging cost to calculate shipping profit or subsidy.
Free Shipping Threshold
Estimate the order threshold needed to protect a target contribution margin when shipping becomes free.
Average Order Value
Calculate average order value, revenue per customer and orders per customer.
ROAS by Product
Measure product level return on ad spend, contribution after ad spend and break even ROAS.
Creator Sponsorship Rate
Build a sponsorship quote from deliverables, production time, usage rights and add ons.
YouTube Earnings
Estimate channel revenue from views, RPM and additional sponsorship or affiliate income.
Affiliate Commission
Calculate affiliate earnings from sales volume, average order value and commission rate.
Digital Product Break Even
Calculate sales needed to recover launch, platform and advertising costs for a digital product.
Subscription Revenue
Model MRR, ARR, churned revenue and net recurring revenue from subscribers and monthly price.
Creator Payout
Calculate creator net payout after platform fees, management share and payment processing.
Ecommerce Break Even Units
Calculate unit contribution and units required to cover fixed ecommerce operating costs.
Fitness & Performance
One Rep Max
Estimate one repetition maximum and useful training percentages from a completed lift set.
Strength Level
Compare lifted weight with body weight using a strength to body weight ratio and estimated one rep max.
Plate Loading
Calculate the plates needed on each side of a barbell for a target loaded weight.
Lean Body Mass
Estimate lean body mass, fat mass and lean mass percentage from body weight and body fat percentage.
Waist to Height Ratio
Calculate waist to height ratio and show a plain language screening range.
Muscle Gain Calorie
Build a calorie and protein target for a chosen rate of weight gain.
Cutting Calorie
Build a calorie deficit, protein target and estimated timeline for a weight loss goal.
Running Pace
Convert distance and finish time into pace, speed and projected common race finish times.
Health & Wellness
BMI
Calculate adult body mass index, weight category and a BMI based healthy weight range with US or metric inputs.
Calorie
Estimate resting energy needs, maintenance calories and goal calorie ranges using established adult energy equations and activity levels.
BMR
Estimate basal metabolic rate using the Mifflin St Jeor equation and compare it with a second reference formula.
TDEE
Estimate total daily energy expenditure across multiple activity levels and compare maintenance calorie scenarios.
Body Fat
Estimate adult body fat percentage using the US Navy circumference method with body composition category context.
Ideal Weight
Compare four widely used adult ideal body weight formulas and see their average reference estimate.
Healthy Weight Range
Estimate the adult weight range associated with BMI 18.5 to 24.9 for a given height in US or metric units.
Macro
Build daily protein, carbohydrate and fat targets from a calorie target using flexible macro percentages.
Protein Intake
Estimate an adult daily protein range based on body weight, activity level and training goal.
Water Intake
Estimate a practical daily fluid planning target from body weight, activity, climate and pregnancy or breastfeeding status.
Pregnancy Due Date
Estimate due date, gestational age and trimester milestone dates from the first day of the last menstrual period and cycle length.
Pregnancy Weight Gain
Compare pregnancy weight gain with Institute of Medicine reference ranges based on prepregnancy BMI and singleton or twin pregnancy.
Ovulation
Estimate ovulation date and fertile window from the first day of the last period and typical cycle length.
Menstrual Cycle
Project upcoming period dates, cycle phases and estimated fertile windows from your typical cycle pattern.
Heart Rate Zone
Calculate training heart rate zones using age predicted maximum heart rate and the Karvonen heart rate reserve method.
Blood Pressure Range
Classify an adult blood pressure reading using current common category thresholds and calculate pulse pressure and mean arterial pressure.
Math & Education
Math Solver
Solve common algebra, trigonometry, and calculus expressions with learning oriented guidance.
Graphing
Plot functions and visualize equations across a selected range.
Scientific
Evaluate advanced mathematical expressions with scientific functions.
Algebra
Simplify, evaluate, solve, factor, and expand algebraic expressions where supported.
Geometry
Calculate common areas, perimeters, volumes, angles, and geometric properties.
Statistics
Analyze a dataset with common descriptive statistical measures.
Fraction
Add, subtract, multiply or divide two fractions and simplify the result.
Ratio
Simplify a ratio and solve equivalent ratio relationships.
Proportion
Solve a missing value in a four term proportion.
Average
Calculate mean, count, sum, minimum and maximum from a set of numbers.
Median Mode Range
Calculate median, mode, range, minimum and maximum from a set of numbers.
Standard Deviation
Calculate population and sample standard deviation, variance and mean.
Probability
Calculate event probability, complement probability and expected successes.
Percentage Change
Calculate absolute change and percentage increase or decrease between two values.
Square Root
Calculate a principal square root and squared verification.
Exponent
Calculate powers, reciprocal powers and common related values.
Logarithm
Calculate logarithms using a custom positive base and compare with natural and base 10 logs.
Quadratic Equation
Solve a quadratic equation and report discriminant, vertex and roots when real.
Linear Equation
Solve a one variable linear equation in the form ax + b = c.
Systems of Equations
Solve a two equation linear system and identify whether a unique solution exists.
Slope
Calculate slope, rise, run and line equation from two coordinate points.
Distance Formula
Calculate straight line distance and midpoint between two coordinate points.
Triangle
Calculate triangle area, perimeter and selected angle information from side lengths.
Circle
Calculate circle area, circumference and diameter from radius.
Area
Calculate area for common rectangles, triangles and circles from entered dimensions.
Volume
Calculate volume for common rectangular, cylindrical and spherical shapes.
Pythagorean Theorem
Solve the missing side of a right triangle from the other two sides.
GPA
Calculate weighted GPA from course grades and credit hours.
Grade
Calculate current weighted course grade from assignment category scores and weights.
Final Grade
Calculate the score needed on a final exam to reach a target course grade.
Test Score
Convert correct answers and total questions into score percentage and missed questions.