Fitness & Nutrition Calculators
Calories, TDEE, macros, protein, pace, one-rep max, and training zone calculators.
16 tools
- BMR Calculator Basal metabolic rate (Mifflin–St Jeor).
- Calorie Calculator Daily calorie needs using Mifflin–St Jeor (BMR → TDEE).
- Calories Burned Calculator Estimate calories burned by activity MET.
- Carbohydrate Calculator Carb intake targets by goal.
- Diet Style Macro Calculator Macros from calories with keto, balanced, or high-carb presets.
- Fat Intake Calculator Daily fat grams from calorie target.
- Height Calculator Predict a child’s adult height from age, weight, and parents’ heights (Khamis–Roche), or use parents-only mid-parental height. Includes a height unit converter.
- Macro Calculator Protein, carbs, and fat targets from calories.
- One Rep Max Calculator Epley 1RM estimate.
- Pace Calculator Running pace, time, or distance solver.
- Protein Calculator Daily protein by body weight and goal.
- Running Race Predictor Predict another race distance time from a recent result (Riegel).
- Target Heart Rate Calculator Karvonen / %HRmax training zones.
- TDEE Calculator Total daily energy expenditure.
- TDEE Recalibrator / Plateau Adjust calorie estimate from actual weight change over weeks.
- Weight Watcher Points Calculator Simplified points-style estimate from macros.