Fitness calculators · 102 tools
Fitness math, no advice attached.
BMI, TDEE, 1RM, pace, FTP, heart-rate zones. Every formula is shown, every input is editable, and nothing leaves your browser.
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Body Composition 10 tools
- BMI Calculator
- TDEE Calculator
- BMR Calculator (Mifflin-St Jeor)
- Body Fat Percentage (Navy Method)
- BMR Calculator (Harris-Benedict)
Conversions 10 tools
- Height Converter (cm to feet/inches)
- Weight Converter (kg to lbs)
- Distance Converter (km to miles)
- Speed Converter (MPH to km/h to m/s)
- Energy Converter (kcal to kJ)
Cycling 10 tools
- FTP Calculator (from 20-Min Test)
- Cycling Power Zones Calculator
- Cycling Power Calculator (Watts from Speed)
- Power-to-Weight Ratio Calculator
- Bike Gear Ratio Calculator
Energy Expenditure 8 tools
- Calorie Burn — Running
- Calorie Burn — Walking
- Calorie Burn — Cycling
- Calorie Burn — Swimming
- Calorie Burn — Weight Training
Heart Rate Zones 6 tools
- Max Heart Rate Calculator (220 Minus Age)
- Target Heart Rate Calculator
- Heart Rate Zones (Karvonen Method)
- Heart Rate Zones (% of Max)
- Max Heart Rate Calculator (Tanaka Formula)
Macros & Intake 7 tools
- Macro Split Calculator
- Protein Intake Calculator
- Water Intake Calculator
- Caffeine Half-Life Calculator
- Alcohol Calories Calculator
Progress Tracking 6 tools
- Time-to-Goal Calculator (Weight)
- Weight Change Percentage Calculator
- Strength Progression Calculator
- Training Cycle Planner (Weeks/Deload)
- Personal Record Progression Calculator
Running 15 tools
- Running Pace Calculator
- VDOT Calculator (Jack Daniels)
- Marathon Time Predictor
- Race Time Predictor (Riegel Formula)
- Pace Converter (min/mile to min/km)
Strength Training 18 tools
- One-Rep Max Calculator (Epley Formula)
- Barbell Plate Calculator (lbs)
- Strength Standards Percentile Calculator
- Barbell Plate Calculator (kg)
- Wilks Score Calculator