BMR Calculator

Calculate BMR with the browser-side formula documented on this page.

Documented formula Displayed result General-information estimate
Health Tools

BMR Calculator

Enter values and run the tool.

BMR Calculator formula source

For BMR Calculator, the basal estimate uses the Mifflin–St Jeor equation; the calorie page then multiplies it by the selected activity factor.

BMR Calculator required units

For BMR Calculator, use the exact units printed beside every field; the implementation performs no automatic unit detection or conversion.

Who the BMR Calculator estimate applies to

For BMR Calculator, the underlying Mifflin equation was derived from healthy adults; this simple page does not establish suitability for children, pregnancy, illness, athletes, or clinical nutrition.

BMR Calculator example

Worked input: Weight (kg) = 70; Height (cm) = 170; Age = 30 BMR Calculator expected result: 1618 kcal/day To verify BMR Calculator, reproduce its worked example and compare the displayed or downloaded health estimate with the stated expected result. When BMR Calculator returns a file, open the download and inspect every affected page or image.

BMR Calculator limitations

For BMR Calculator, the equation omits medical history, medications, laboratory findings, body composition, measurement error, and other factors a health professional may use.

Important health information

For BMR Calculator, the result is general information only, not a diagnosis, treatment plan, medical device output, emergency service, or substitute for individualized advice from a qualified health professional.

How your data is handled

BMR Calculator runs the formula operation in the current browser session. BMR Calculator reads and processes the supplied values in the current browser and does not submit them to an application endpoint. Browser extensions, device security and any manual sharing or download from BMR Calculator remain outside the tool’s control.

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Frequently asked questions

BMR Calculator accepts Weight (kg), Height (cm), Age and Sex and produces Health estimate. Supported input: BMR Calculator accepts Numeric form values.
BMR Calculator runs the formula operation in the current browser session.
For BMR Calculator, every displayed form field is required and numeric fields must parse to finite JavaScript numbers; For BMR Calculator, no general minimum or maximum numeric range is enforced; individual formulas apply only the guards described in the transformation.
BMR Calculator precision: displayed calorie values are rounded to whole numbers.
To verify BMR Calculator, reproduce its worked example and compare the displayed or downloaded health estimate with the stated expected result. When BMR Calculator returns a file, open the download and inspect every affected page or image.
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