CALCULATOR CATEGORY
Fitness & Performance Calculators
Free calculators for strength, running pace, body composition and training performance estimates.
8 calculators in this category. Choose a tool below.
Use performance estimates as reference points
Fitness calculators can organize pace, strength, training or body measurements into useful reference points. The value is consistency. A result tracked under the same conditions can help show change over time, while a single result may be affected by technique, fatigue or measurement error. Use estimates for planning and keep health or injury decisions separate.
- Measure consistently when tracking change over time.
- Do not treat a broad category or formula as an individualized training prescription.
- Compare results with the same testing setup whenever possible.
Read more: practical calculator guide
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.