Sports & Performance

10K Pace Calculator

Calculate your target 10K running pace per km and per mile, 400m track lap splits, and 5K halfway split targets.

Sports & Performance

1RM Calculator

Calculate One Rep Max (1RM) for weightlifting exercises using Brzycki, Epley, Lander, Mayhew, and Wathen equations.

Sports & Performance

5K Pace Calculator

Calculate your target 5K running pace per km and per mile, 400m track lap splits, and 1K checkpoint targets for 5K race goals.

Sports & Performance

Athlete Hydration Calculator

Calculate pre-exercise, during-exercise, and post-exercise fluid intake targets from body weight, training duration, intensity, and climate conditions.

Sports & Performance

Athlete Performance Calculator

Comprehensive athletic conditioning index, Work-to-Rest ratio, fatigue index, and peak power output analysis.

Sports & Performance

Bench Press 1RM Calculator

Calculate One Rep Max (1RM) specifically for barbell bench press, training percentages, and strength benchmarks.

Sports & Performance

Bench Press Percentage Calculator

Calculate percentage-based bench press working weights (50% to 95% of 1RM) for chest hyperopy and powerlifting.

Sports & Performance

Bike Speed Calculator

Calculate bicycle speed in km/h and mph based on rider power output in Watts, rider weight, and road slope.

Sports & Performance

BMI for Athletes Calculator

Calculate body mass index (BMI) adjusted for athletic muscle mass, FFMI (Fat-Free Mass Index), and physique status.

Sports & Performance

BMR Calculator

Calculate your Basal Metabolic Rate (BMR) — the calories your body burns at complete rest — using the Mifflin-St Jeor and Harris-Benedict equations.

Sports & Performance

Body Fat Percentage Calculator

Calculate your body fat percentage using the scientifically validated US Navy circumference method for men and women.

Sports & Performance

Calorie Needs for Athletes Calculator

Calculate daily energy expenditure (TDEE) and total calorie requirements for competitive athletes based on training volume.

Sports & Performance

Calories Burned Running Calculator

Calculate total calories burned during a run from body weight, distance, and running pace using MET metabolic equivalents.

Sports & Performance

Carbohydrate Needs Calculator

Calculate daily and intra-workout carbohydrate intake requirements (grams/day and grams/hour) for endurance training.

Sports & Performance

Cycling Cadence Calculator

Calculate cycling pedal cadence in Revolutions Per Minute (RPM), gear speed, and pedal stroke efficiency.

Sports & Performance

Cycling Calories Calculator

Calculate calories burned cycling based on body weight, average speed/intensity METs, and ride duration.

Sports & Performance

Cycling Distance Calculator

Calculate total cycling ride distance based on average speed (km/h or mph) and total riding duration.

Sports & Performance

Cycling FTP Calculator

Calculate Functional Threshold Power (FTP in Watts) from 20-minute, 8-minute, or 1-hour maximum power test efforts.

Sports & Performance

Cycling Gear Ratio Calculator

Calculate bicycle gear ratio, gear inches, development distance per pedal revolution, and speed at cadence.

Sports & Performance

Cycling Pace Calculator

Calculate your cycling pace per kilometer and per mile, average speed, and total ride time from pace and distance.

Sports & Performance

Cycling Power Calculator

Calculate cycling mechanical power output in Watts (W) and Watts per kilogram (W/kg) based on speed, gradient, and weight.

Sports & Performance

Cycling Speed Calculator

Calculate your average cycling speed in km/h and mph, pace per km, from ride distance and total duration.

Sports & Performance

Deadlift 1RM Calculator

Calculate One Rep Max (1RM) for conventional and sumo deadlifts, training maxes, and powerlifting ratios.

Sports & Performance

Deadlift Percentage Calculator

Calculate deadlift training percentages (50% to 95% of 1RM) for strength, power, and hypertrophy.

Sports & Performance

DOTS Score Calculator

Calculate DOTS score for powerlifting strength performance comparisons across different body weights and genders.

Sports & Performance

Electrolyte Needs Calculator

Calculate sodium, potassium, and magnesium electrolyte replacement needs for sweat loss during long workouts.

Sports & Performance

Exercise Calories Calculator

Calculate total calories burned across running, cycling, swimming, strength training, walking, and sports.

Sports & Performance

Exercise Heart Rate Calculator

Calculate active exercise target heart rate range for cardio, running, cycling, and rowing.

Sports & Performance

Finish Time Calculator

Project your final race finish time using intermediate checkpoint split times and Riegel's endurance formula.

Sports & Performance

FTP Zone Calculator

Calculate 7 Coggan Power Training Zones (Active Recovery, Endurance, Tempo, Threshold, VO2Max, Anaerobic, Neuromuscular) from your FTP.

Sports & Performance

Half Marathon Pace Calculator

Calculate your target half marathon running pace per km and per mile, and 5K, 10K, and 15K checkpoint split targets.

Sports & Performance

Half Marathon Training Calculator

Calculate 12-week half marathon training plan paces, long run progression, and weekly mileage distribution.

Sports & Performance

Heart Rate Zone Calculator

Calculate your 5 heart rate training zones from age and resting heart rate using the Karvonen Heart Rate Reserve formula.

Sports & Performance

Hiking Elevation Gain Calculator

Calculate total vertical climbing elevation gain, average grade slope percentage, and extra energy expenditure.

Sports & Performance

Hiking Pace Calculator

Calculate hiking pace per km/mile accounting for Naismiths Rule elevation gain (+30 mins per 300m elevation).

Sports & Performance

Hiking Time Calculator

Calculate total hiking time including trail terrain difficulty, pack weight, and ascent rate elevation.

Sports & Performance

Ideal Weight for Athletes Calculator

Calculate target competition body weight for runners, cyclists, powerlifters, and endurance athletes based on frame and target body fat %.

Sports & Performance

Karvonen Formula Calculator

Calculate target heart rate training intensity zones based on Heart Rate Reserve (HRR = HRmax - HRrest).

Sports & Performance

Kilometer Pace Calculator

Calculate your running pace per kilometer, average speed in km/h and mph, and 400m track split times from run distance and duration.

Sports & Performance

Lean Body Mass Calculator for Athletes

Calculate athletic Lean Body Mass (LBM), fat mass, and muscle-to-fat ratio using Boer, James, and Hume formulas.

Sports & Performance

Long Jump Calculator

Calculate track and field long jump distance, takeoff velocity (m/s), projection angle, and horizontal speed.

Sports & Performance

Macronutrient Calculator

Calculate your optimal daily protein, carbohydrate, and fat macro breakdown in grams based on your total daily calorie target and fitness goal.

Sports & Performance

Marathon Pace Calculator

Calculate your target marathon running pace per km and per mile, half-marathon split, and 30K checkpoint targets.

Sports & Performance

Marathon Time Calculator

Calculate your estimated full marathon finish time from planned running pace and fatigue buffer multiplier.

Sports & Performance

Marathon Training Calculator

Calculate 16-week marathon training milestones, peak long run distance, target marathon pace, and weekly mileage.

Sports & Performance

Maximum Heart Rate Calculator

Calculate maximum heart rate (HRmax) using Tanaka formula (208 - 0.7 × Age), Haskell-Fox (220 - Age), and Gulati equations.

Sports & Performance

MET Calculator

Calculate Metabolic Equivalent of Task (METs), oxygen consumption (VO2), and total calories burned during physical activities.

Sports & Performance

Mile Pace Calculator

Calculate your running pace per mile, average speed in mph and km/h, and 1600m track split times from run distance and duration.

Sports & Performance

Negative Split Calculator

Calculate target negative split pacing strategy where the second half of your race is executed faster than the first half.

Sports & Performance

One-Rep Max Calculator

Estimate your maximum single-repetition lifting strength for bench press, squat, and deadlift using scientific Epley, Brzycki, Baechle, and Lander formulas.

Sports & Performance

Pace Conversion Calculator

Convert running and swimming paces between min/km, min/mile, min/100m, and km/h speed.

Sports & Performance

Pace to Speed Calculator

Convert your running pace in min/km or min/mile to running speed in km/h, mph, m/s, and treadmill settings.

Sports & Performance

Post Workout Nutrition Calculator

Calculate post-workout muscle recovery macro requirements (protein, carbohydrates, electrolytes, and water).

Sports & Performance

Powerlifting Total Calculator

Calculate powerlifting meet total (Squat + Bench Press + Deadlift), bodyweight multiple ratio, and Wilks/DOTS scores.

Sports & Performance

Pre Workout Meal Calculator

Calculate optimal pre-workout carbohydrate, protein, and fluid timing (1-4 hours prior to exercise).

Sports & Performance

Protein Intake Calculator

Calculate your optimal daily protein intake in grams per day based on body weight, fitness goal, and activity level.

Sports & Performance

Race Predictor Calculator

Predict your future 5K, 10K, Half Marathon, and Full Marathon finish times from a recent baseline race result.

Sports & Performance

Race Time Calculator

Calculate your total estimated race finish time from target race distance and running pace.

Sports & Performance

Recovery Time Calculator

Calculate required muscle recovery time in hours (24h to 72h) based on workout volume, RPE, and muscle group.

Sports & Performance

Rest Day Calculator

Calculate weekly rest day frequency based on training split, age, experience level, and acute workout fatigue.

Sports & Performance

Resting Heart Rate Calculator

Evaluate resting heart rate (RHR in bpm), cardiovascular fitness category, stroke volume efficiency, and recovery status.

Sports & Performance

Running Cadence Calculator

Calculate running stride rate (cadence in steps per minute SPM), stride length, and running economy efficiency.

Sports & Performance

Running Distance Calculator

Calculate your total running distance in kilometers, miles, meters, and 400m track laps from running speed and duration.

Sports & Performance

Running Heart Rate Calculator

Calculate target training heart rate zones for running workouts based on age, resting heart rate, and Karvonen formula.

Sports & Performance

Running Pace Calculator

Calculate your target running pace per kilometer and per mile, average speed (km/h & mph), and projected finish times for 5K, 10K, half marathon, and full marathon races.

Sports & Performance

Running Speed Calculator

Calculate your average running speed in km/h, mph, m/s, and treadmill speed settings from distance and run duration.

Sports & Performance

Running Split Calculator

Calculate even, negative, or positive kilometer and mile race splits for marathons, half marathons, 10K, and 5K races.

Sports & Performance

Running Training Plan Calculator

Calculate weekly mileage progression, long run distance, and workout distribution for 5K, 10K, Half, and Marathon training.

Sports & Performance

Speed Conversion Calculator

Convert sports speeds between km/h, mph, m/s, knots, and running pace (min/km, min/mile).

Sports & Performance

Speed to Pace Calculator

Convert your running speed in km/h or mph to running pace in min/km and min/mile.

Sports & Performance

Sports Hydration Calculator

Calculate hourly fluid sweat rate loss and fluid replacement needs for endurance sports, running, and cycling.

Sports & Performance

Sports Performance Calculator

Evaluate overall athletic performance index, power-to-weight, aerobic efficiency, and training readiness score.

Sports & Performance

Sprint Time Calculator

Calculate sprint times for 40-yard dash, 60m, 100m, 200m, and 400m track events, top speed, and acceleration.

Sports & Performance

Squat 1RM Calculator

Calculate One Rep Max (1RM) for back squats, working set percentages, and powerlifting strength standards.

Sports & Performance

Squat Percentage Calculator

Calculate percentage-based back squat training weights from 50% to 95% of 1RM for strength cycles.

Sports & Performance

Strength Level Calculator

Evaluate overall strength level classification (Beginner, Novice, Intermediate, Advanced, Elite) across main compound lifts.

Sports & Performance

Strength Standards Calculator

Compare your 1RM strength levels against age and bodyweight strength standards for squat, bench press, deadlift, and overhead press.

Sports & Performance

Swimming Calories Calculator

Calculate calories burned swimming laps based on stroke type (freestyle, breaststroke, butterfly, backstroke), intensity METs, and duration.

Sports & Performance

Swimming Distance Calculator

Calculate total swimming distance in meters, yards, and pool laps from swim time and 100m pace.

Sports & Performance

Swimming Pace Calculator

Calculate your swimming pace per 100 meters and 100 yards, lap splits, and average swim speed from distance and time.

Sports & Performance

Swimming Speed Calculator

Calculate swimming velocity in meters per second (m/s), km/h, and minutes per 100m pace.

Sports & Performance

Swimming Time Calculator

Calculate total swimming workout or race completion time based on distance (meters/yards) and 100m pace.

Sports & Performance

Swim Pace per 100m Calculator

Calculate swimming pace per 100 meters from total swim time and distance in meters.

Sports & Performance

Swim Pace per 100 Yards Calculator

Calculate swimming pace per 100 yards for short course yards (SCY) pool workouts and swim competitions.

Sports & Performance

Target Heart Rate Calculator

Calculate your optimal target heart rate range for fat burning, aerobic endurance, tempo runs, and peak VO2 max workouts.

Sports & Performance

TDEE Calculator

Calculate your Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor equation with activity factor adjustment, and get calorie targets for fat loss and muscle gain.

Sports & Performance

Training Intensity Calculator

Calculate percentage of 1RM or %HRmax training intensity zone for weightlifting and cardio sessions.

Sports & Performance

Training Load Calculator

Calculate session Training Impulse (TRIMP) and Training Load (RPE × Minutes) to monitor fatigue and avoid overtraining.

Sports & Performance

Training Max Calculator

Calculate 90% or 85% Training Max (TM) used for Wendler 5/3/1 powerlifting cycles and progressive overload training.

Sports & Performance

Training Pace Calculator

Calculate Jack Daniels VDOT personalized training paces (Easy, Marathon, Tempo, Interval, Repetition) for endurance runners.

Sports & Performance

Triathlon Pace Calculator

Calculate target pacing requirements for Swim (/100m), Bike (km/h), and Run (/km) to achieve target triathlon finish time.

Sports & Performance

Triathlon Time Calculator

Calculate total race completion time for Sprint, Olympic, Half Ironman 70.3, and Full Ironman 140.6 triathlons including transitions T1 and T2.

Sports & Performance

Vertical Jump Calculator

Calculate vertical jump height, peak leg power output in Watts (Sayers equation), and jump explosive index.

Sports & Performance

VO2 Max Calculator

Estimate your maximal aerobic oxygen uptake (VO2 Max) and cardiorespiratory fitness level using heart rate ratio and Cooper 12-minute run test standards.

Sports & Performance

VO2 Max Running Calculator

Estimate maximum oxygen uptake VO2 Max (mL/kg/min) from your recent 5K, 10K, or Cooper 12-minute run test performance.

Sports & Performance

Volume Load Calculator

Calculate total weekly weightlifting volume load (Tonnage = Sets × Reps × Load) per muscle group.

Sports & Performance

Walking Calories Calculator

Calculate calories burned walking based on body weight, walking pace, incline grade, and duration.

Sports & Performance

Walking Pace Calculator

Calculate walking pace (minutes per km or mile), walking speed, and step rate duration.

Sports & Performance

Weightlifting Percentage Calculator

Calculate percentage-based training loads (50% to 100% of 1RM) for strength, hypertrophy, and powerlifting programs.

Sports & Performance

Wilks Calculator

Calculate your Wilks Coefficient point score to compare powerlifting performance across different bodyweight classes for men and women.

Sports & Performance

Workout Calories Calculator

Calculate total calories burned during gym strength sessions, HIIT, CrossFit, cardio, and group fitness classes.

Sports & Performance

Workout Volume Calculator

Calculate total resistance training workout volume (Sets × Reps × Weight in kg/lbs) for muscle hypertrophy tracking.