Harris-Benedict Calculator
Estimate resting energy expenditure with the revised Harris-Benedict equation and show the formula used.
Enter or adjust the values above, then calculate.
Harris-Benedict: revised Resting Energy Equation
Estimate resting energy expenditure with the revised Harris-Benedict equation and show the formula used.
Inputs this tool uses
- Age
- Sex used by the formula
- Height
- Weight
What you get
Revised Harris–Benedict resting-energy estimate.
How to use the Harris-Benedict Calculator
- Enter age, sex used by the formula, height and the other fields relevant to this calculation.
- Select any method, activity level or option shown on this page, then choose Calculate.
- Read the main result together with the supporting values, method, assumptions and limitations below before using the estimate.
How this calculation works
Revised Harris–Benedict estimates resting energy from age, sex, height and weight.
Example calculation
The sample values loaded into the calculator produce 1492 kcal/day. This example exists to show how the output is structured; replace the sample values with your own inputs for your calculation.
Assumptions and limitations
- Energy and nutrient outputs are estimates or general reference values, not individualized treatment targets.
- Adult calorie-goal tools should not be used for children, pregnancy or medical nutrition therapy unless the page explicitly supports that life stage.
Sources and review status
Source set last verified 2026-09-25. No clinician review is claimed unless a real named reviewer is displayed.
Connected tools
Continue with the closest related calculation without re-entering sensitive values automatically.
Estimate adult BMR and maintenance calories from age, sex, height, weight and activity level using a named formula and transparent activity multipliers.
Open tool →◐BMR CalculatorEstimate basal/resting energy with Mifflin-St Jeor and optionally compare established equations.
Open tool →◐RMR CalculatorEstimate resting energy needs and explain the practical distinction between RMR and BMR.
Open tool →