Our mission
The internet is full of fitness calculators, but most are riddled with ads, demand sign-ups, or quietly resell your data. We started TDEE Calculate to build a calmer alternative: a single place with carefully implemented, science-backed calculators that simply work.
How we are different
- Privacy by design. Every calculation runs locally in your browser. We never collect, store, or transmit your weight, height, age, or any health information.
- Multiple formulas, transparently shown. When science offers more than one accepted equation, we expose all of them so you can pick the one most appropriate for you.
- Real-world tools. Most calculators stop at "Mifflin-St Jeor". We go further with adaptive TDEE, carb cycling, refeed days, and other planning tools that actually help you reach a goal.
- No paywall, no app, no spam. Just calculators. We support the site through unobtrusive advertising.
Our methodology
Every formula on the site comes from peer-reviewed research, primarily:
- Mifflin et al. (1990) — A new predictive equation for resting energy expenditure.
- Roza & Shizgal (1984) — The Harris-Benedict equation re-evaluated.
- Katch & McArdle — Frequency Of Use Of The Lean Body Mass Approach.
- U.S. Navy circumference body-fat method.
- WHO and CDC body-mass index categorisations.
Editorial standards
Health information should be accurate and safe. Our content is written to provide general fitness and nutrition education and is not a substitute for advice from a registered healthcare provider, dietitian, or certified coach. We never recommend extreme diets, dangerous calorie deficits, or unproven supplements.
Contact us
Questions, corrections, or requests for a new calculator? Reach us at [email protected] or through our contact page.