Enter your details and activity level. The result is an estimate; needs vary from person to person.
Formula
BMR = 10 × weight + 6.25 × height − 5 × age + 5 (men) or − 161 (women); daily needs = BMR × activity factor
Worked example
A 35-year-old woman, 65 kg, 168 cm, lightly active: BMR ≈ 1,364 kcal, daily needs ≈ 1,876 kcal.
Frequently asked questions
What is BMR?
The energy your body uses at complete rest to keep you alive.
How accurate is this?
Formulas are usually within about 10% for most adults, but individual needs differ.
Should I follow a strict calorie target?
Talk to a doctor or dietitian before changing your diet significantly.
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Results are estimates for information only. Check important figures with a professional.