BMR Calculator

Last updated: April 2026

Unit system

Sex

Age

yrs

Weight

Height

BMR Result

1,780 calories/day

Details

Weight used80 kg

Height used180 cm

FormulaMifflin-St Jeor

Explanation

Your BMR is the estimated number of calories your body burns at rest before activity is included.

Related calculators:

TDEE Calculator
Calorie Needs Calculator
Macro Calculator
BMI Calculator

What is BMR?

BMR stands for Basal Metabolic Rate. It estimates how many calories your body burns per day at complete rest.

How is BMR calculated?

This calculator uses the Mifflin-St Jeor equations. Men: 10 x weight(kg) + 6.25 x height(cm) - 5 x age + 5. Women: 10 x weight(kg) + 6.25 x height(cm) - 5 x age - 161.

BMR vs TDEE

BMR excludes activity. TDEE includes daily movement and exercise, so it is usually the better number for setting calorie targets.

Limitations of BMR

BMR is an estimate. Your true resting energy use can vary with body composition, hormones, health status, medication, and activity history.

What does this mean?

This calculator is designed to help you understand the likely number before you make a decision or start an application.

Your result should be checked against official UK guidance, especially if your circumstances include dependants, exemptions, prior leave, or a complex immigration history.

Treat the figure as a planning tool rather than legal advice. Where the answer affects an application deadline or major payment, speak to an authorised adviser.