Fitness & Body Calculators

Precision tools for every fitness goal

From calories burned to one-rep maxes, body fat to bra sizing — every fitness number you need, solved with verified formulas. No sign-up, no fluff.

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Calories Burned 48 calculators
Treadmill Calories BurnedSpeed, incline and duration Walking Calorie BurnedDistance and body weight Exercise Calories BurnedGeneral activity calculator HIIT Calories BurnedHigh-intensity interval sessions Swimming Calories BurnedStroke and speed based Spinning Calories BurnedIndoor cycling class Elliptical Calories BurnedResistance and duration Stationary Bike CaloriesResistance levels Recumbent Bike CaloriesSeated cycling burn Stair Climbing CaloriesFloors and body weight Hiking Calories BurnedTerrain and pack weight Yoga Calories BurnedStyle and intensity Hot Yoga Calories BurnedHeat factor included Pilates Calories BurnedMat and reformer Zumba Calories BurnedDance fitness class Dancing Calories BurnedStyle and intensity Burpee Calories BurnedReps and body weight Jumping Jacks CaloriesReps per minute Push Up Calories BurnedSets and reps Pull Up Calories BurnedReps and bodyweight Sit Up Calories BurnedAb workout burn Crunches Calories BurnedDuration and weight Plank Calories BurnedIsometric hold time Hip Thrust Calories BurnedSets, reps and load Kettlebell Workout CaloriesSwing and circuit based Battle Rope Calories BurnedInterval duration Circuit Training CaloriesFull circuit burn Shadow Boxing CaloriesRound and pace based BJJ Calories BurnedGrappling intensity Basketball Calories BurnedGame vs practice Badminton Calories BurnedCompetitive vs casual Kayaking Calories BurnedPaddling intensity Surfing Calories BurnedSession length Aqua Aerobics CaloriesWater resistance class Water Jogging CaloriesPool running Trampoline Calories BurnedRebounding sessions Hula Hooping CaloriesWeighted vs standard Sprinting Calories BurnedSpeed intervals Standing Calories BurnedDesk-standing hours Rowing Calories BurnedErg and water rowing Sleeping Calories BurnedBMR and sleep hours Driving Calories BurnedSedentary reference Gardening Calories BurnedDigging, mowing, planting Stepper Workout CaloriesMini-stepper sessions Vibration Plate CaloriesFrequency and duration Steps to CaloriesStep count conversion Sauna Calories BurnedHeat session burn Steam Room CaloriesWet heat session
Running & Cardio 20 calculators
Running Pace CalculatorMin/km and min/mile Running Cadence CalculatorSteps per minute Running Distance CalculatorTime and pace based 10K Pace CalculatorRace time predictor Marathon Pace Calculator26.2 mi target splits Marathon Finish TimePredicted finish time Walking Pace CalculatorSpeed and time Swimming Pace CalculatorSplits per 100m/yd Cycling Speed CalculatorAverage speed output Cycling Cadence CalculatorRPM targets Cycling Power ZonesFTP-based training zones FTP CalculatorFunctional threshold power Heart Rate Training Zones5-zone HR method Fat Burning Zone CalculatorOptimal heart rate range Anaerobic ThresholdLactate threshold HR Triathlon CalculatorSwim, bike, run splits ERG CalculatorRowing machine output YMCA Cycle TestSubmaximal VO₂ estimate Workout Time CalculatorSession planning Step Length CalculatorStride and step estimate
Body Metrics & Composition 18 calculators
Body Fat CalculatorNavy and BMI methods Lean Body Mass CalculatorFat-free mass estimate Muscle Mass CalculatorSkeletal muscle estimate FFMI CalculatorFat-free mass index Body RecompositionBulk and cut planning Body Roundness IndexShape-based health metric Waist-to-Hip RatioCardiovascular risk marker Waist-to-Height RatioSimple health indicator Ideal Weight CalculatorHeight-based ranges Ideal Thigh Size CalculatorProportional targets Leg to Body RatioProportionality metric Torso to Leg RatioSitting vs standing height Ape Index CalculatorWingspan vs height Grip Strength CalculatorPercentile ranking Vertical Jump CalculatorJump height and power Stride Length CalculatorHeight-based estimate Steps to Miles CalculatorStride-based conversion Sitting Time CalculatorDaily sedentary hours
Strength & Training 14 calculators
One Rep Max (1RM)Epley, Brzycki, Lombardi formulas Bench Press CalculatorMax and rep targets Hip Thrust CalculatorLoad and rep max Push Up Weight CalculatorEquivalent load lifted Progressive OverloadWeek-by-week progression Workout Volume CalculatorTotal tonnage per session RPE CalculatorRate of perceived exertion Strength Level CalculatorBeginner to elite ranking Leg Press to SquatLoad conversion Squat to Deadlift RatioStrength balance check Wilks CalculatorBodyweight-adjusted score IPF CalculatorIPF GL Points DOTS CalculatorPowerlifting coefficient Warm Up CalculatorProgressive warm-up loads
Nutrition & Diet 19 calculators
Protein Intake CalculatorGoal-based targets Carbohydrate IntakeDaily carb targets Carb Cycling CalculatorHigh, low and no-carb days Zig Zag Calorie CyclingVariable calorie schedule Bulking Calories CalculatorClean bulk surplus Weight Loss by DateDeficit and timeline Weight Gain CalculatorSurplus and timeline Daily Energy RequirementsTDEE by activity level Resting Metabolic RateRMR at rest Harris-Benedict CalculatorClassic BMR formula Thermic Effect of FoodDigestion calorie cost Gram to Calorie CalculatorMacro energy conversion Daily Water IntakeWeight and activity based Daily Sugar IntakeWHO-based limits Intermittent Fasting Window16:8, 18:6 schedules Creatine Dosage CalculatorLoading and maintenance Creatine Water IntakeHydration adjustment Caffeine Half-Life CalculatorClearance timing Galpin EquationIn-workout hydration
Sizing & Fit 14 calculators
Bra Size CalculatorBand and cup measurement US Bra Size CalculatorUS sizing standard British Bra Size CalculatorUK sizing standard Indian Bra Size CalculatorIN sizing guide Bali Bra Size CalculatorBali brand sizing Jockey Bra Size CalculatorJockey brand sizing Victoria’s Secret Bra SizeVS brand sizing Sports Bra Size CalculatorActivity-specific fit International Bra ConverterUS / EU / UK / FR / AU Shoe Size ConverterUS, UK, EU, CM Clothing Size ConverterInternational sizes Ring Size CalculatorCircumference to size Glove Size CalculatorHand measurement guide Helmet Size CalculatorHead circumference fit
Wellness & Recovery 7 calculators
Muscle Recovery CalculatorRest days by intensity Ice Bath CalculatorCold immersion burn Jet Lag Recovery CalculatorInternational time zones Medicine Time ZoneDosing across time zones Birth Control Time ZonePill timing adjustments Sinclair CoefficientOlympic weightlifting score Dog Food Serving SizePet nutrition guide

Formula-based fitness tools, free to use

Every calculator uses peer-reviewed formulas from established fitness and exercise science standards — MET values, Epley, Harris-Benedict, US Navy, and more. Same inputs always return the same outputs.

✓Free, always ✓No account required ✓140+ tools ✓Verified formulas ✓Metric & imperial ✓Instant results

Common questions

Everything you need to know about the fitness calculators.

Yes — every calculator on CalculatorMom is completely free. No premium tier, no account required, no sign-up. Open any tool, enter your values, and get your result immediately.

Calorie burn calculators use MET values from the Compendium of Physical Activities, combined with your body weight and duration. Results are solid estimates — individual metabolism and fitness level means actual burn can vary by ±10–15%. Use these as planning references, not absolute measurements.

The US Navy method — using neck, waist, and hip measurements — is widely used and requires only a tape measure. Consistency matters more than which method you choose. Pick one and track it over time.

Yes. Each calculator that uses body measurements or distances includes a unit toggle so you can enter values in kg/cm or lb/inches without converting manually first.

Start with the One Rep Max (1RM) Calculator — it supports Epley, Brzycki, and Lombardi formulas. From there, use the Bench Press Calculator for chest-specific maxes, or the Progressive Overload Calculator to plan weekly load increases based on your 1RM.

Start with the Bra Size Calculator using your band and bust measurements. Then use the International Bra Size Converter to translate to UK, EU, French, or Australian sizing. Brand-specific tools for Bali, Jockey, and Victoria’s Secret are also available, as band sizing can differ even within the same country system.

The Strength and Training section includes the Wilks Calculator, IPF GL Points Calculator, and DOTS Calculator — the main coefficients used to compare lifts across bodyweight classes. The 1RM Calculator and Progressive Overload Calculator are most useful for meet preparation programming.

Nothing you enter is saved, transmitted, or retained. All calculations run locally in your browser and reset when you close the tab. There are no accounts, no tracking of individual inputs, and no sharing with third parties.

TDEE (Total Daily Energy Expenditure) is the total number of calories your body burns per day, including all activity. Use the Daily Energy Requirements calculator, which calculates TDEE based on your BMR and selected activity level. For just your resting burn, use the Harris-Benedict or Resting Metabolic Rate calculator.

Use the Running Pace Calculator to find your target min/km or min/mile based on a goal finish time. For race-specific planning, the 10K Pace Calculator and Marathon Pace Calculator factor in typical fatigue curves and give per-kilometre splits. The Marathon Finish Time Calculator works in reverse — input your pace and it predicts your finish.