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BMR Calculator

Basal metabolic rate, calories burned at rest. e.g. “What's my BMR at 75 kg and 175 cm?”

● Runs locally, your inputs are not uploaded

Enter your values

Results update as you type. All calculation happens in your browser.

Methodology

Basal metabolic rate, calories burned at rest. This tool uses a standard, documented formula and runs entirely on your device.

Last reviewed January 2026 · Runs client-side

Basal metabolic rate
1,699 kcal/day
Energy burned at complete rest
BMR1,699 kcal/day
Formula used
BMR = 10·kg + 6.25·cm − 5·age + s (s = +5 male, −161 female)
10×75 + 6.25×175 − 5×30 + 5 = 1,699
Assumptions: Uses the Mifflin-St Jeor equation with metric inputs. Estimates only.

Results are estimates based on the values you entered and a standard formula. Verify important figures independently. FinDock does not provide financial, tax, legal, or medical advice.

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Estimating your basal metabolic rate

Basal metabolic rate is the energy your body uses at complete rest just to keep you alive, breathing, circulation, and cell repair. It is the floor of your daily calorie needs, before any movement is added.

This calculator uses the widely used Mifflin-St Jeor equation, which estimates BMR from your height, weight, age, and sex. Like all such formulas, it produces an estimate rather than a personal measurement.

How to use this calculator

  1. Choose your sex, which changes a constant in the formula.
  2. Enter your weight in kilograms and height in centimetres.
  3. Add your age and read your estimated BMR in calories per day.

What the inputs mean

Weight and height
Entered in metric units. Accurate figures give a closer estimate.
Sex
The formula adds 5 for males and subtracts 161 for females, reflecting average differences in body composition.
Worked example

A 30-year-old man at 75 kg and 175 cm has a BMR of about 1,700 calories a day, the energy he would burn doing nothing at all.

The formula, in plain terms

Mifflin-St Jeor: BMR = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + s, where s is +5 for males and −161 for females.

Frequently asked questions

Is BMR the same as calories I should eat?

No. BMR is your resting burn. Your daily need is higher once activity is included, see the TDEE calculator.

How accurate is it?

It is a solid estimate for most people, but individual metabolism varies. Treat it as a starting point.

Last reviewed January 2026. This explainer is general information, not professional advice.