Calculator
Daily Calorie Estimator
Estimate your total daily energy needs from your Basal Metabolic Rate and activity level.
Daily Calorie Estimator
Enter your details to estimate daily calories.
This tool is for education and general interest only. It is not a medical device and must not be used to diagnose, treat or make health decisions. Always consult a qualified professional.
How to use it
- Step 1Enter your sex, age, height and weight.
- Step 2Choose your activity level.
- Step 3Read your estimated daily energy needs.
How the body budgets energy
Your total daily energy use has three main parts: the energy burned at rest (BMR), the energy used to digest food, and the energy spent moving.
Multiplying your BMR by an activity factor gives a rough estimate of the calories needed to maintain your current weight.
Using the estimate
This is a maintenance estimate — the energy that keeps things steady. Real needs vary with genetics, muscle mass and health, so use it as a guide only.
See the BMR calculator for the resting figure, and read our nutrition basics and metabolism guides.
Questions & Answers
Frequently asked questions
Total Daily Energy Expenditure — the calories you use in a day including rest, digestion and movement.
It is an educational estimate. Real energy needs vary between individuals; track and adjust, or consult a professional.
Not necessarily. It is a starting reference, not personalised diet advice.
Understand the science
Go beyond the numbers
Every tool pairs with a guide that explains the biology behind it in plain language.