Fitness & Body Tools

Smart tools for every fitness goal

130+ free calculators covering calories burned, body metrics, strength training, nutrition, pace, and sizing. Formula-based, no sign-up needed.

130+Calculators
7Categories
FreeAlways
Popular Right Now
Body Fat CalculatorBody Running Pace CalculatorCardio One Rep Max (1RM)Strength Protein Intake CalculatorNutrition Treadmill Calories BurnedCalories Bra Size CalculatorSizing
Free to use, always
Formula-based calculations
No account required
Metric & imperial
Clear, readable results
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Calories Burned
Activity-specific burn estimates for 48 sports & exercises
48 Tools
Treadmill Calories BurnedSpeed, incline & duration Walking Calorie BurnedDistance & body weight Exercise Calories BurnedGeneral activity calculator HIIT Calories BurnedHigh-intensity intervals Swimming Calories BurnedStroke & speed based Spinning Calories BurnedIndoor cycling class Elliptical Calories BurnedResistance & duration Stationary Bike CaloriesResistance levels Recumbent Bike CaloriesSeated cycling burn Stair Climbing CaloriesFloors & body weight Hiking Calories BurnedTerrain & pack weight Yoga Calories BurnedStyle & intensity Hot Yoga Calories BurnedHeat factor included Pilates Calories BurnedMat & reformer Zumba Calories BurnedDance fitness Dancing Calories BurnedStyle & intensity Burpee Calories BurnedReps & body weight Jumping Jacks CaloriesReps per minute Push Up Calories BurnedSets & reps Pull Up Calories BurnedReps & bodyweight Sit Up Calories BurnedAb workout burn Crunches Calories BurnedDuration & weight Plank Calories BurnedIsometric hold time Hip Thrust Calories BurnedSets, reps & load Kettlebell Workout CaloriesSwing & circuit based Battle Rope Calories BurnedInterval duration Circuit Training CaloriesFull circuit burn Shadow Boxing CaloriesRound & 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 & water rowing Sleeping Calories BurnedBMR & sleep hours Driving Calories BurnedSedentary reference Gardening Calories BurnedDigging, mowing, planting Stepper Workout CaloriesMini-stepper sessions Vibration Plate CaloriesFrequency & duration Steps to CaloriesStep count conversion Sauna Calories BurnedHeat session burn Steam Room CaloriesWet heat session
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Running & Cardio Performance
Pace targets, power zones & performance benchmarks
20 Tools
Running Pace CalculatorMin/km and min/mile Running Cadence CalculatorSteps per minute Running Distance CalculatorTime & pace based 10K Pace CalculatorRace time predictor Marathon Pace Calculator26.2 mi target splits Marathon Finish TimePredicted finish time Walking Pace CalculatorSpeed & time Swimming Pace CalculatorSplits per 100m/yd Cycling Speed CalculatorAverage speed output Cycling Cadence CalculatorRPM targets Cycling Power ZonesFTP-based zones FTP CalculatorFunctional threshold power Heart Rate Training Zones5-zone HR method Fat Burning Zone CalculatorOptimal HR 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 & step estimate
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Body Metrics & Composition
Measure and track what your body is made of
18 Tools
Body Fat CalculatorNavy & BMI methods Lean Body Mass CalculatorFat-free mass estimate Muscle Mass CalculatorSkeletal muscle estimate FFMI CalculatorFat-free mass index Body RecompositionBulk & cut planning Body Roundness IndexShape-based 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 Ape Index CalculatorWingspan vs. height Grip Strength CalculatorPercentile ranking Vertical Jump CalculatorJump height & power Stride Length CalculatorHeight-based estimate Steps to Miles CalculatorStride-based conversion Sitting Time CalculatorDaily sedentary hours
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Strength & Training
Lifting targets, volume tracking & program planning
14 Tools
One Rep Max (1RM)Epley, Brzycki, Lombardi Bench Press CalculatorMax & rep targets Hip Thrust CalculatorLoad & 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 RatioBalance check Wilks CalculatorBodyweight-adjusted score IPF CalculatorIPF GL Points DOTS CalculatorPowerlifting coefficient Warm Up CalculatorProgressive warm-up loads
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Nutrition & Diet
Macros, intake targets & weight management tools
19 Tools
Protein Intake CalculatorGoal-based targets Carbohydrate IntakeDaily carb targets Carb Cycling CalculatorHigh / low / no-carb days Zig Zag Calorie CyclingVariable calorie schedule Bulking Calories CalculatorClean bulk surplus Weight Loss by DateDeficit & timeline Weight Gain CalculatorSurplus & timeline Daily Energy RequirementsTDEE by activity level Resting Metabolic RateRMR at rest Harris-Benedict CalculatorBMR formula Thermic Effect of FoodDigestion calorie cost Gram to Calorie CalculatorMacro energy conversion Daily Water IntakeWeight & activity based Daily Sugar IntakeWHO-based limits Intermittent Fasting Window16:8, 18:6 schedules Creatine Dosage CalculatorLoading & maintenance Creatine Water IntakeHydration adjustment Caffeine Half-Life CalculatorClearance timing Galpin EquationIn-workout hydration
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Sizing & Fit
Bra sizes, shoe sizes, ring sizing & clothing conversions
14 Tools
Bra Size CalculatorBand & 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
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Wellness & Recovery
Recovery timing, rest tools & specialised health calculators
7 Tools
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
Why Trust CalculatorMom

Built on real formulas, reviewed for accuracy

Every calculator on this page uses peer-reviewed formulas or established fitness standards. No guesswork, no sign-up walls — just inputs, a formula, and a clear result.

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Formula Transparency

Every calculator references the equation it uses — Epley, Harris-Benedict, Navy body fat, Mifflin-St Jeor — so you know exactly how your result was produced.

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Fitness-Specific Accuracy

Tools are built for the specific sport or activity they cover. The HIIT calculator uses different MET values than the walking one. Precision beats broad estimates.

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Regularly Updated

As fitness science evolves — updated IPF formulas, revised hydration guidelines — calculators are reviewed and updated to reflect current evidence.

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No Data Stored

Results reset every session. No account, no tracking of your numbers, no data held between visits.

✓ Free to use ✓ No account required ✓ Metric & imperial units ✓ 130+ tools ✓ Formula-based results
Frequently Asked Questions

Everything you need to know

Common questions about the fitness calculators and how to use them.

Yes — every calculator on CalculatorMom is completely free. No premium tier, no account required, no paywall. Enter your values and get a 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 mean actual burn can vary by ±10–15%. Use these as planning references, not absolute measurements.

The US Navy method (neck, waist, and hip measurements) is widely used and requires only a tape measure. For tracking progress over time, consistency in method matters more than which method you choose.

Yes. Each calculator that uses body measurements or distance includes a unit toggle so you can enter values in kg/cm or lb/inches without needing to convert first.

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. For specific brands like Bali, Jockey, or Victoria’s Secret, use their dedicated calculators as band sizing can differ even within the same country system.

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