MedDroidDaily calorie calculator
Built by MedDroid · formulas from Mifflin-St Jeor (1990)
Free · no sign-up · runs in your browserEstimate how many calories you burn in a day and roughly how many you need to keep, lose or gain weight. For adults aged 18 to 80.
Daily calorie calculator
Your numbers stay in your browser. Nothing you type here is sent or stored.
Your result
Enter your details and press Calculate to see your result here.
How it works
Mifflin-St Jeor equation (1990): BMR = 10 × weight (kg) + 6.25 × height (cm) − 5 × age (years) + 5 for men, or − 161 for women.
Daily need = BMR × activity factor: 1.2 sedentary, 1.375 light, 1.55 moderate, 1.725 active, 1.9 very active.
To lose about 0.5 kg a week the calculator subtracts 500 kcal a day; to gain about 0.5 kg a week it adds 500 kcal a day.
Safety floor: it never shows a target below 1,200 kcal a day for women or 1,500 kcal a day for men. Lower intakes need medical supervision.
Related pages
Not a diagnosis. This tool gives a general estimate from a standard published formula. It is not a diagnosis and does not replace a check-up by a qualified doctor. If you feel very unwell, call your local emergency number (India: 108 or 112).
Frequently asked questions
What is BMR?
Basal metabolic rate is the energy your body uses at complete rest for breathing, circulation and keeping warm. Most of the calories you burn each day go to BMR.
Is the Mifflin-St Jeor equation accurate?
It is one of the most widely used equations for healthy adults and is often recommended by dietitians. It is still an estimate, and it can be less accurate for very muscular people or people with obesity.
Why won't the calculator show a very low calorie target?
Eating below about 1,200 kcal (women) or 1,500 kcal (men) a day makes it hard to get enough nutrients and can be unsafe without supervision. A doctor or dietitian can help plan a safe approach.
How fast should I lose weight?
A loss of about 0.5 to 1 kg a week is usually considered safe for most adults. Faster loss is harder to keep up and may need medical support.