Health tool

Calorie Calculator

Get a practical daily calorie estimate using a common maintenance formula.

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Instant useNo sign up, quick result.

Health focusedBuilt for quick body and calorie estimates.

Related next stepsJump to nearby health tools after.

Calculator

Use the calorie calculator

Estimate daily calories using age, sex, height, weight and activity.

Age

Weight (kg)

Height (cm)

Activity multiplier

Sex adjustment (5 for male, -161 for female)

Result: waiting for input

Enter your values to see the result.

How it works

Formula

BMR = 10×weight + 6.25×height − 5×age + sex constant, then multiply by activity.

Example

More activity raises estimated maintenance calories.

Frequently asked questions

Why is sex entered as a number?

This simplified version uses +5 for male and −161 for female in the formula.

Is this a medical recommendation?

No. It is a planning estimate only.

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Tool guide

How to use the calorie calculator

Estimate daily calories using age, sex, height, weight and activity. Use this page for a fast estimate, compare a few scenarios, and adjust the inputs until the result matches what you need to decide.

This tool also sits inside the CalcBeacon health cluster. That makes it easier to find from category pages, related tools, and supporting guides when you want to compare options.

When it is usefulUse this tool when you want a fast estimate, want to compare options, or want a clearer answer before moving on.

Common mistakesCheck that your numbers use the same units, avoid leaving key fields blank, and test a second scenario so you can see how sensitive the final result is.

Next useful stepAfter using this page, compare the result with a related calculator or open the guide to check the number in context.

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