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Calorie Calculator

Estimate resting energy needs, maintenance calories and goal calorie ranges using established adult energy equations and activity levels.

Enter your measurements and health details

Use current, consistently measured values for the calorie calculation. Results update automatically and are intended for education and planning, not diagnosis.

Sex used by equation

Age

years

Weight

Height

Activity level

Goal

Estimated BMR—

Estimated maintenance calories—

Goal calorie estimate—

Modeled weekly energy change—

Important: Health results are educational screening and planning estimates. They are not a diagnosis and are not a substitute for medical care.

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How to use this calculator

Using the calculator

Enter Sex used by equation, Age, Weight, Height, and the other fields shown. Estimate resting energy needs, maintenance calories and goal calorie ranges using established adult energy equations and activity levels.

Reading the result

The result estimates daily energy needs from the personal and activity information entered. Use it as a planning estimate rather than an exact measurement.

How it is calculated

Calorie needs are estimated from a modeled resting energy requirement and an activity adjustment. Individual energy needs can differ because activity, body composition, health, and measurement error vary from person to person.

Results are estimates based on the values entered. Review the Methodology and Calculator Disclaimer for important limitations.

Common questions

Why does the calorie result look different from another calculator?

Different calculators can use different equations, activity factors and goal adjustments. Small differences are expected because the result is an estimate, not a direct measurement.

Does the result account for every health condition?

No. General calorie calculators cannot account for every condition, medication, pregnancy status or individualized nutritional need.

How should I use the estimate?

Use it as a planning reference and watch how the assumptions compare with real world trends over time. Seek professional guidance when health or treatment decisions are involved.