Free Online Daily Calorie Needs Estimator
Estimate resting energy and daily maintenance calories for adults using age, height, weight and activity level.
Open Daily Calorie Needs EstimatorHow to use Daily Calorie Needs Estimator
- Enter the measurements or amounts in the fields above.
- Check that dimensions, rates and units match the labels.
- Select “Estimate daily energy” to see a clear estimate and the formula used.
What this tool does
Estimate resting energy and daily maintenance calories for adults using age, height, weight and activity level.
Your input is processed in your browser and is not uploaded by this tool.
Resting energy estimate uses the Mifflin–St Jeor predictive equation; estimated maintenance multiplies that result by the selected activity factor.
Before you start
- No account is required to open the tool.
- Check the supported input formats and limits on the tool page.
- Review generated or estimated results before relying on them.
How are daily calorie needs estimated?
The tool estimates resting energy from age, height, weight and equation option, then applies an activity multiplier. The result is approximate, not a prescribed intake.