Fitness Calculators Comparison
All 42 Fitness calculators in one comparison table, with the formula and a worked example for each.
What you can work out with these calculators
Fitness calculators convert training inputs into the numbers you plan around: running pace and split times, estimated one-rep maximum, heart-rate zones and calories burned. Each uses a named, published formula with its assumptions stated, because training formulas describe averages rather than individuals.
- Turn a target finish time into per-kilometre or per-mile split paces.
- Estimate a one-rep maximum from a set you actually completed.
- Set heart-rate training zones from age, resting rate and the zone method you prefer.
- Estimate calories burned from activity, duration and body weight.
Compare calculators by what you enter
All 42 calculators here, one row each: what each tool works out and the fields it asks for before it does. Open any row to use the calculator itself.
| Calculator | What it works out | What you enter |
|---|---|---|
| Running Pace & Split Times | Target pace → finish time + per-km splits (or solve required pace) | Distance (km) · Target Pace (min/km) · Target Pace (sec/km) |
| Race Time Predictor | Predict race times for different distances | Known Distance (km) · Known Time (min) |
| Steps to Distance Calculator | Convert steps to distance and calories | Steps · Height (cm) |
| Max Heart Rate Calculator | Calculate max heart rate from formulas | Age |
| Heart Rate Recovery | Evaluate heart rate recovery | Peak HR (bpm) · HR After 1 Min |
| VO2 Max Estimator | Estimate VO2 max from fitness test | Resting HR · Age · Gender |
| Exercise Calorie Burn | Estimate calories burned during exercise | Weight (kg) · Activity · Duration (min) |
| Body Fat % from BMI | Estimate body fat percentage from BMI (Deurenberg formula) | Weight (kg) · Height (cm) · Age (years) · Gender |
| Pull-Up Test Standards | Evaluate pull-up performance | Max Pull-ups · Gender |
| Sit & Reach Test | Evaluate flexibility from sit-and-reach | Sit & Reach (cm) · Age · Gender |
| Sports Calorie Calculator | Calculate calories burned playing sports | Sport · Weight (kg) · Duration (min) |
| Calories Burned at Rest (BMR) | Calculate resting calorie burn | Weight (kg) · Height (cm) · Age · Gender |
| One-Rep Max Calculator | Estimate your one-rep max (1RM) | Weight Lifted (kg) · Reps Performed |
| Training Max Calculator | Calculate training max percentages | 1RM (kg) |
| Weight Loss Pace Calculator | Calculate how long to reach goal weight | Current Weight (kg) · Goal Weight (kg) · Daily Calorie Deficit |
| Muscle Gain Calculator | Estimate muscle growth potential | Current Weight (kg) · Height (cm) · Years Training · Daily Calorie Surplus |
| Push-Up Test Standards | Evaluate push-up performance by age | Max Push-ups · Age · Gender |
| Squat Standards by Body Weight | Compare squat to strength standards | Max Squat (kg) · Body Weight (kg) |
| Bench Press Standards | Compare bench to strength standards | Max Bench (kg) · Body Weight (kg) |
| Deadlift Standards by Weight | Compare deadlift to strength standards | Max Deadlift (kg) · Body Weight (kg) |
| Overhead Press Standards | Compare OHP to strength standards | Max OHP (kg) · Body Weight (kg) |
| Plank Hold Standards | Evaluate plank hold time by age | Plank Hold (seconds) · Age |
| Grip Strength Standards | Evaluate grip strength by age/gender | Grip Strength (kg) · Age · Gender |
| Burpee Test Calculator | Estimate fitness from burpee count | Burpees in 1 Minute |
| Sit-Up Test Calculator | Abdominal endurance from sit-ups | Sit-Ups in 1 Minute |
| Rowing Standards | Compare 500m row split times | 500m Split (sec) · Distance (m) |
| Swim Pace Calculator | Swimming pace per 100m | Total Time (min) · Distance (m) |
| Cycling Speed & Time | Time to cycle a distance at speed | Distance (km) · Avg Speed (km/h) |
| Cycling Cadence Calculator | Speed from cadence and gear | Cadence (RPM) · Wheel Diameter (in) · Gear Inches |
| Stride Length Calculator | Stride length from height | Height (cm) · Pace |
| Weekly Training Volume | Weekly lifting volume and tonnage | Sets per Exercise · Reps per Set · Weight (kg) · Exercises per Week |
| Vertical Jump Power | Power output from vertical jump | Jump Height (cm) · Body Weight (kg) |
| Beep Test (VO2 Max) Estimator | Estimate VO2 max from beep test level | Level Reached · Shuttles at That Level |
| Bodyweight Strength Ratio | Lift-to-bodyweight strength ratios | Your Lift (kg) · Body Weight (kg) |
| Deload Week Planner | Deload volume based on training age | Normal Sets/Exercise · Normal 1RM % · Training Days/Week |
| Workout Rest Timer | Optimal rest between sets | Training Goal |
| Treadmill Incline Pace Calculator | Flat-pace equivalent of an incline run | Speed (km/h) · Incline (%) |
| Rowing Split Calculator | Pace per 500 m and power output | Distance (m) · Minutes · Seconds |
| Sweat Rate Calculator | Fluid loss per hour from pre/post exercise weights | Pre-exercise Weight (kg) · Post-exercise Weight (kg) · Duration (minutes) |
| Training Load Calculator (sRPE) | Session load from rating of perceived exertion × minutes | Session RPE (0–10) · Duration (minutes) |
| Beep Test VO₂ Max Estimator | Estimated VO₂ max from the 20 m shuttle run level reached | Level Reached · Starting Speed (km/h) · Speed Increase per Level (km/h) |
| Resting Metabolic Rate Calculator (Cunningham) | RMR from fat-free mass via the Cunningham equation | Fat-Free Mass (kg) |
Prefer the annotated list? Browse the full list with one line on what each calculator does.
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