← All categories
01
● Fitness
Fitness calculators
BMI, body fat, energy expenditure, strength — the math behind training and health.
- BMI calculatorBody Mass Index — height/weight ratio with healthy range.
- Body fat % calculatorNavy method body composition with fat-mass and lean-mass split.
- TDEE calculatorTotal Daily Energy Expenditure with goal-based macro split (cut, maintain, bulk).
- One-rep max calculatorEstimate your 1RM from any sub-max set, across seven proven formulas.
- Macro calculatorSplit your daily calories into optimal protein, fat, and carbs by goal.
- Calorie deficit calculatorDaily calorie deficit for fat loss with safe rate-of-loss estimate.
- Ideal weight calculatorTarget body weight by 5 clinical formulas (Devine, Robinson, Miller, Hamwi, BMI-based).
- Water intake calculatorDaily hydration target adjusted for weight, activity, and climate.
- Heart rate zones calculatorTraining zones 1–5 from max HR or Karvonen HRR method.
- VO₂ max calculatorEstimated aerobic capacity from resting HR or timed run test.
- Waist-to-hip ratio calculatorAbdominal fat risk score — WHO risk classification included.
- Protein intake calculatorDaily protein target by bodyweight, goal, and activity level.