Calorie Calculator (BMR & TDEE)
Estimate adult resting energy and daily expenditure from stated body measurements and an activity assumption. This is not a calorie prescription.
How daily calories are estimated
The Mifflin–St Jeor equation estimates resting energy from weight, height, age and a sex-specific constant. An activity multiplier gives a rough daily expenditure. Individual needs can differ; this page does not set weight-loss or weight-gain targets.
FAQ
What is TDEE?
Total Daily Energy Expenditure — the calories you burn per day including activity.
Adult estimate only. Not suitable for children, pregnancy, breastfeeding or medical nutrition planning.
Use the result with confidence
Estimate resting energy, then activity
For adults, the Mifflin–St Jeor estimate uses weight in kg, height in cm and age in years: 10 × weight + 6.25 × height − 5 × age, then +5 for the male equation or −161 for the female equation. The BMR-labelled result is an estimate of resting energy expenditure.
A reproducible example
For the male equation at age 30, 70 kg and 170 cm, the resting estimate is 1,617.5 kcal/day. Multiplying by the sedentary factor 1.2 gives 1,941 kcal/day. Changing activity changes this estimate substantially; a label such as “moderate” cannot measure your actual daily movement.
Use the result as context
The activity multiplier is a rough planning assumption, not part of an individual metabolic measurement. This tool does not prescribe a calorie deficit or surplus and does not predict a rate of weight change. It is not designed for children, pregnancy, breastfeeding or managing a medical condition. A clinician or dietitian can help interpret individual needs.