All Free Fitness Calculators & Tools
Browse our complete collection of 32+ free fitness calculators, AI tools, and health tools. No signup required - use any tool instantly.
Showing all 32 tools
Body Composition
7 toolsBMI Calculator
Calculate your Body Mass Index using the WHO standard formula
Body Fat Calculator
Estimate your body fat percentage with the U.S. Navy method
Ideal Weight Calculator
Find your healthy weight range using Hamwi, Devine & Robinson formulas
Lean Body Mass Calculator
Calculate lean body mass vs fat mass with visual breakdown
Army Body Fat Calculator
Check PASS/FAIL per AR 600-9 standards using circumference method
Body Recomp Calculator
Plan your body recomposition timeline, calories, and targets
Body Type Quiz
Discover if you're an ectomorph, mesomorph, or endomorph
Nutrition & Calories
11 toolsTDEE Calculator
Calculate your Total Daily Energy Expenditure by activity level
Calorie Calculator
Find your daily calorie needs for weight loss, maintenance, or gain
BMR Calculator
Calculate your Basal Metabolic Rate at rest
Macro Calculator
Get your daily protein, carbs & fat targets by goal
Protein Calculator
Calculate optimal daily protein intake for muscle gain or fat loss
Calorie Deficit Calculator
Plan your fat loss timeline with safe calorie deficit settings
Water Intake Calculator
Find your daily hydration needs based on weight and activity
Creatine Calculator
Calculate your creatine loading and maintenance dose by bodyweight
Supplement Stack Builder
Build a personalised supplement stack for your goal and budget
Intermittent Fasting Calculator
Generate your 16:8, 18:6, 20:4, 5:2, or OMAD fasting schedule
Meal Nutrition Calculator
Calculate calories, protein, carbs & fat for any meal
Strength & Lifting
6 toolsOne Rep Max Calculator
Calculate your 1RM for any exercise using Epley & Brzycki formulas
Bench Press Calculator
Calculate bench press 1RM, strength level, and percentile ranking
Squat Calculator
Calculate squat 1RM, depth guidelines, and strength standards
Deadlift Calculator
Calculate deadlift 1RM with conventional vs sumo comparison
Strength Standards Checker
Check your level from Beginner to Elite across all major lifts
Wilks Score Calculator
Compare powerlifting strength across weight classes with Wilks score
Cardio & Endurance
4 toolsHeart Rate Zone Calculator
Get your 5 personalised heart rate training zones in bpm
Running Pace Calculator
Calculate pace, finish time, and race splits for any distance
VO2 Max Calculator
Estimate your aerobic fitness using Cooper or Rockport tests
Steps to Calories Calculator
Convert daily steps to calories burned with distance estimate
Wellness & Lifestyle
2 toolsAI-Powered Tools
2 toolsCan't find what you need?
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