BMR Calculator

Estimate basal metabolic rate using the Mifflin-St Jeor equation.

Formula

BMR estimates calories burned at rest.

A 30-year-old male, 70 kg, 175 cm has BMR around 1,649 kcal/day.

Enter the requested values, then the calculator applies the formula and updates the result instantly.

Use this calculator for quick planning, estimates, comparisons, and everyday decisions where the formula applies.

Common mistakes include using inconsistent units, entering percentages as decimals, rounding too early, or forgetting extra allowances such as waste, tax, or fees.

Examples

Example

A 30-year-old male, 70 kg, 175 cm has BMR around 1,649 kcal/day.

Use the calculator above for your own numbers.

Formula Check

BMR estimates calories burned at rest.

Formula-based result

Practical Use

Estimate basal metabolic rate using the Mifflin-St Jeor equation.

Fast online calculation

How to Calculate BMR Manually

Start with the values requested in the form, keep the units consistent, and apply this formula: BMR estimates calories burned at rest.

The calculator above follows the same logic, then formats the answer so you can quickly compare inputs, copy the result, and check the related tools if your task has another step.

When to Use This Calculator

Quickly estimate a result before making a decision
Compare options using the same formula
Check manual calculations
Save time on repeated calculations

How It Works

Enter your values.
The page applies the formula.
Review the main result, details, and formula used.

Common Mistakes

Mixing different units
Using the wrong percentage format
Leaving required fields blank
Rounding before the final step

Related Calculators

BCBMI CalculatorCalculate body mass index from weight and height.CCCalorie CalculatorEstimate daily calories from BMR and activity level.MCMacro CalculatorSplit daily calories into protein, carbs, and fat targets.

Frequently Asked Questions

What does the BMR Calculator do?

Estimate basal metabolic rate using the Mifflin-St Jeor equation.

Is this result an estimate?

Yes. The calculator follows the formula shown on the page. Verify important decisions with a qualified professional where needed.

Can I use this on mobile?

Yes. The calculator is designed to work on phones, tablets, and desktop screens.