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Free calculators
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Fast, accurate, and free. Health, fitness, finance, and daily-life calculators with formulas verified against published sources. No email required.
- Calculators
- 21+
- Categories
- 5
Health & Fitness
TDEE Calculator
Total Daily Energy Expenditure with Mifflin-St Jeor formula.
Calorie Calculator
Daily calorie target for your weight goal.
Macro Calculator
Protein, fat, and carb split by diet style.
BMR Calculator
Basal metabolic rate with 3 formulas.
BMI Calculator
Body Mass Index with WHO categories.
Body Fat Calculator
Body fat percentage via US Navy method.
Ideal Weight Calculator
Ideal weight from 4 published formulas.
Protein Intake Calculator
Daily protein target by activity and goal.
Water Intake Calculator
Daily water intake based on weight and activity.
Heart Rate Zones Calculator
Training heart rate zones via Tanaka and Karvonen.
One Rep Max Calculator
Estimate 1RM from any sub-maximal set.
Pace Calculator
Running pace, speed, and race time predictions.