Calorie Calculator
Estimate how many calories you burn each day. This calculator uses the Mifflin-St Jeor equation to estimate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE), and suggests calorie targets for weight loss or gain.
How it works
W is weight in kg, H height in cm, and A age in years. Your BMR is multiplied by an activity factor (1.2 to 1.9) to estimate TDEE, the calories needed to maintain your current weight.
Men: BMR = 10W + 6.25H − 5A + 5 · Women: BMR = 10W + 6.25H − 5A − 161Worked examples
Adult male
A 30-year-old man who weighs 70 kg and is 175 cm tall has a BMR of about 1,649 kcal/day.
Adult female
A 30-year-old woman of the same size has a BMR of about 1,483 kcal/day.
Frequently asked questions
What is BMR?
Basal Metabolic Rate is the number of calories your body burns at complete rest to maintain basic functions.
What is TDEE?
Total Daily Energy Expenditure is your BMR plus the calories you burn through activity and digestion — roughly your maintenance calories.
How many calories should I eat to lose weight?
A common guideline is a deficit of about 250–500 kcal/day below TDEE, but consult a professional for personal advice.
This tool is for general information only and is not medical advice. Always consult a qualified healthcare professional before making health-related decisions.
Related calculators
BMI Calculator
Free BMI calculator: check your body mass index in metric or imperial units and see which weight category you fall into.
EverydayPercentage Calculator
Free percentage calculator: find what X% of a number is, what one number is as a percent of another, and percentage increase or decrease.
EverydayAge Calculator
Free age calculator: find your exact age in years, months and days, plus total days, weeks and months from any date of birth.