TDEE Calculator
Work out your total daily energy expenditure and calorie needs based on activity level with this free TDEE calculator right in your browser.
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Result
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Estimate only — not medical or nutritional advice. Individual needs vary; consult a professional before making big changes.
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter sex, age, height, weight and activity level.
- Read your TDEE (maintenance calories) plus mild loss/gain targets.
How it works
TDEE = BMR × an activity multiplier (1.2 sedentary → 1.9 very active). It's the calories to maintain your weight.
Worked example
BMR 1,780, moderate activity. TDEE ≈ 1,780 × 1.55 = 2,759 kcal/day.
Tips
- Estimate only — not medical or nutritional advice. Individual needs vary.
Frequently asked questions
How do I lose weight from this?
Eat below TDEE. The calorie deficit calculator works out a daily target for a goal.
Privacy?
Runs entirely in your browser. Your inputs are not saved or transmitted.
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Explore more in Health, Fitness, Nutrition & Body.
Cite this tool
Zerdly. (2026). TDEE Calculator. Retrieved from https://www.zerdly.com/tools/tdee-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.