General Fitness Calculators
VO2max, fitness tests, calorie burn, and general training tools.
Activity Conversion Calculator
Converts between different activity equivalents using MET values.
Try CalculatorAge Grade Calculator
WMA age-grading: compares performance to age/sex world record.
Try CalculatorApe Index Calculator
Calculate your ape index (wingspan to height ratio)
Try CalculatorArmy Body Fat Calculator
Estimate body fat using the US Army tape test method
Try CalculatorBeep Test Calculator
Multi-stage fitness test (beep test).
Try CalculatorBruce Protocol Calculator
Bruce Protocol treadmill test for VO2max estimation.
Try CalculatorBurpees Calorie Calculator
Burpee exercise. Estimate based on weight, duration, and intensity.
Try CalculatorClimbing Grade Converter
Converts between climbing grade systems: French, UIAA, YDS, V-scale (bouldering).
Try CalculatorCooper Test Calculator
Cooper Test: 12-minute run.
Try CalculatorCrossFit WOD Scorer
Estimates relative performance for common CrossFit benchmarks (Fran, Murph, etc.
Try CalculatorCycling VO2max Estimator
Cycling VO2max from power: VO2max (ml/min) = 10.
Try CalculatorDaily Steps Goal Calculator
10,000 steps = ~8 km.
Try CalculatorDecathlon Scoring Calculator
IAAF decathlon scoring tables.
Try CalculatorDunk Calculator
Can you dunk? Required reach = rim height (305cm) + ball diameter (24cm) - standing reach.
Try CalculatorElliptical Calorie Calculator
Elliptical trainer workout. Estimate based on weight, duration, and intensity.
Try CalculatorExercise Calorie Calculator
General exercise and activity. Estimate based on weight, duration, and intensity.
Try CalculatorFitness Age Calculator
Estimates biological fitness age from VO2max, resting HR, waist circumference, and activity level.
Try CalculatorGolf Handicap Calculator
World Handicap System: HI = (Score - Course Rating) x 113 / Slope Rating.
Try CalculatorGrip Strength Calculator
Grip strength norms by age and gender.
Try CalculatorHeart Rate Recovery Calculator
HR Recovery: drop from peak to 1-min post-exercise.
Try CalculatorHiking Calorie Calculator
Estimate calories burned hiking based on your weight, duration, terrain type, and elevation gain.
Try CalculatorJump Rope Calorie Calculator
Jumping rope / skipping. Estimate based on weight, duration, and intensity.
Try CalculatorMET-Minutes Calculator
MET-minutes = MET value x duration (min).
Try CalculatorMilitary Fitness Test Calculator
Composite score from push-ups, sit-ups, and 2-mile run.
Try CalculatorOCR/Spartan Race Estimator
Estimates OCR finish time: Base run time + obstacle time (30-90 sec each).
Try CalculatorPlank Test Calculator
Core endurance test.
Try CalculatorPunch Force Calculator
Punch force = mass x velocity x (1/impact time).
Try CalculatorPush-Up Test Calculator
Push-up endurance norms by age and gender.
Try CalculatorResting Heart Rate Assessment
Resting HR fitness norms.
Try CalculatorRowing Calorie Calculator
Indoor or outdoor rowing. Estimate based on weight, duration, and intensity.
Try CalculatorRowing Erg Pace Calculator
Rowing erg pace in min/500m.
Try CalculatorRucking Calorie Calculator
Calculate calories burned rucking using the Looney et al. (2024) metabolic rate formula — the most accurate rucking calorie model available, validated against metabolic cart data.
Try CalculatorRucking Weight Calculator
Recommended ruck weight: beginners 10% bodyweight, intermediate 15-20%, advanced 25-33%.
Try CalculatorSit and Reach Test
Flexibility test: reach past toes from seated position.
Try CalculatorSki DIN Setting Calculator
DIN setting by weight, height, boot length, age, and skier type.
Try CalculatorSki Size Calculator
Ski length by height and ability.
Try CalculatorStair Climbing Calorie Calculator
Stair climbing / StairMaster. Estimate based on weight, duration, and intensity.
Try CalculatorStairs Calorie Calculator
Taking stairs vs elevator. Estimate based on weight, duration, and intensity.
Try CalculatorSteps to Distance Converter
Converts steps to distance using stride length.
Try CalculatorStride Length Calculator
Estimates stride length from height.
Try CalculatorVO2max Calculator
Estimates VO2max from race performance using Jack Daniels VDOT tables.
Try CalculatorWalking Calorie Calculator
Estimate calories burned walking based on your weight, duration, and pace.
Try CalculatorWeighted Vest Calorie Calculator
Additional calorie burn from weighted vest: ~10-15% increase per 10% bodyweight added.
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