BMR Calculator

BMR Calculator shows you, in seconds, how many calories your body burns at rest — your Basal Metabolic Rate — and how many you need each day to maintain, lose, or gain weight. It works completely offline and nothing you enter ever leaves your phone.

HOW IT WORKS
The app calculates your BMR with the Mifflin-St Jeor equation, widely regarded as the most accurate for most adults:

• Men: 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5
• Women: 10 × weight(kg) + 6.25 × height(cm) − 5 × age − 161

It also shows the classic revised Harris-Benedict equation side by side, so you can compare the two methods.

It then estimates your Total Daily Energy Expenditure (TDEE) by multiplying your BMR by an activity factor:
• Sedentary (little or no exercise) — × 1.2
• Lightly active (1–3 days/week) — × 1.375
• Moderately active (3–5 days/week) — × 1.55
• Very active (6–7 days/week) — × 1.725
• Extra active (hard exercise or physical job) — × 1.9

WHAT YOU CAN DO
• Enter your sex, age, height and weight in metric or imperial units
• Read your BMR and maintenance calories (TDEE) instantly
• See suggested calories for mild weight loss and weight gain (a 500 kcal daily change is about 0.45 kg / 1 lb per week)
• Compare your daily calories across every activity level in one clear chart
• Learn the formulas behind the numbers with a plain-language guide

BUILT FOR CLARITY
A clean, energetic design puts the big number first, with supporting figures right beside it. Light and dark themes, a tiny download, no clutter and no account required.

AN ESTIMATE, NOT MEDICAL ADVICE
BMR and TDEE formulas are population averages. Your real needs depend on body composition, genetics, hormones, medications and overall health. This app is for general information and education only and is not medical, nutritional or fitness advice. Always consult a qualified doctor or registered dietitian before changing your diet or activity, especially if you have a health condition.

PRIVACY
The app collects no personal data and works fully offline. Ads are served by Google AdMob, which may use an advertising identifier as described in Google's policies.

Download BMR Calculator and get a quick, sensible picture of your metabolism and daily calorie needs.