Our mission
Calorie Calculator Free was built on a simple belief: everyone deserves access to accurate, easy-to-understand nutrition tools without paywalls, sign-ups, or spammy upsells. Whether you want to lose fat, build muscle, or simply understand your body better, the math should be free and the experience should be excellent.
How our calculators work
Our calculators are grounded in peer-reviewed equations used by dietitians and researchers worldwide. We use the Mifflin-St Jeor equation for metabolic rate — currently the most accurate predictive formula for the general population — along with established methods like the U.S. Navy body-fat formula and the Boer lean-mass equation.
Privacy first
Every calculation runs entirely in your browser. We never send your height, weight, or health details to a server, and your recent results are stored only on your own device. You can use every tool here completely anonymously.
What you'll find here
- A complete calorie calculator with goal-based targets and macros
- Dedicated BMI, TDEE, body fat, and 8 more calculators
- Plain-English guides on calories, macros, and weight management
A note on accuracy
Predictive equations are excellent starting points, but every body is different. We encourage you to use our numbers as a baseline, track your real-world results, and adjust over time. For personalized medical advice, always consult a qualified healthcare professional.