Science-based fitness calculators for BMI, BMR, TDEE, body fat, macros, and hydration. Fast, accurate, and built by a developer who values precision and clean design.




TrainCalc is the most popular Web-based alternative to BMI Calculator and Weight Loss Tracker.
TrainCalc is the most popular free alternative to BMI Calculator and Weight Loss Tracker.
- TrainCalc is Free and Proprietary
- TrainCalc is Privacy focused and Lightweight
















































