Sports & Fitness Calculators
Pace, calories burned, VO2 max, and more. 151 free calculators — instant results, no sign-up required.
Easy Run Pace Calculator
Estimate easy run pace range from a recent race performance and effort-based training guidance.
Elo Rating Calculator
Calculate Elo rating changes for single games, full tournaments, multiplayer competitions, and unrated player performance ratings. Supports FIDE, USCF, Chess.com, Lichess, and football K-factor presets.
Tempo Run Pace Calculator
Estimate tempo run pace from a recent race result and convert it to min/km and min/mile.
Interval Run Pace Calculator
Estimate interval training pace and split times from a recent race performance.
Effective Field Goal Percentage (eFG%) Calculator
Calculate eFG% from FGM, 3PM, and FGA. Includes optional True Shooting Percentage (TS%) calculation, performance benchmarks, comparison to traditional FG%, and full explanation of the formula and its place in basketball analytics.
Negative Split Calculator
Plan a negative split race by making the second half slightly faster than the first half.
Ultra Marathon Cutoff Pace Calculator
Calculate the pace needed to beat an ultra marathon cutoff after aid-station time and buffer.
Bike Gear Ratio Calculator
Calculate bike gear ratio, rollout, speed at cadence, and drivetrain comparisons.
Cycling Cadence Calculator
Calculate cadence, speed, gear ratio, and rollout relationships for cycling.
Cycling Pace Calculator
Calculate cycling pace, speed, finish time, and split targets from distance and ride time.
Cycling Power Zone Calculator
Calculate cycling power zones from FTP or custom threshold power.
Cycling Speed Calculator
Calculate average cycling speed from distance and time, with pace and split conversions.
Cycling Time Trial Split Calculator
Plan cycling time trial splits by distance, target speed, or finish time.
FTP Zone Calculator
Calculate cycling FTP training zones from functional threshold power.
Gear Inches Calculator
Calculate bicycle gear inches, gear ratio, meters development, and speed from cadence.
Meters Development Calculator
Calculate meters development, rollout, gear ratio, and cycling speed at cadence.
Training Max Calculator
Calculate training max from true 1RM or estimated 1RM and generate percentage-based lifting loads.
Watts Per Kilogram Calculator
Calculate cycling watts per kilogram, power-to-weight ratio, target power, and target weight.
Warm-up Set Calculator
Calculate warm-up sets for barbell or dumbbell strength training based on your working weight, reps, warm-up style, and available plate increments.
Backoff Set Calculator
Calculate backoff set weight, load drop, total volume, and session tonnage after a heavy top set.
Weekly Set Volume Calculator
Calculate weekly hard sets, total reps, and optional tonnage across multiple exercises for strength or hypertrophy training.
Muscle Group Volume Calculator
Estimate direct, indirect, and effective weekly sets for each muscle group so your strength or hypertrophy program is easier to balance.
Swim Pace Calculator
Calculate swim pace per 100 m, per 100 yd, speed, 50 m split, and projected times from distance and total swim time.
Swim Pace Per 100m Calculator
Convert a swim pace per 100 m into finish time, 25 m split, 50 m split, 100 yd equivalent, and race-distance estimates.
Swim Lap Count Calculator
Calculate how many pool lengths or out-and-back laps you need for a target swim distance in meters, yards, kilometers, or miles.
Pool Length Converter
Convert pool lengths into meters, yards, kilometers, miles, 25 m lengths, 50 m lengths, and 25 yd lengths.
Swim Split Calculator
Calculate average swim splits, cumulative split times, pace per 100 m, and split tables from total distance and total time.
CSS Swim Pace Calculator
Estimate critical swim speed from 400 m and 200 m test times, then generate CSS pace, training ranges, and sendoff suggestions.
Swim Stroke Rate Calculator
Calculate swim stroke rate in strokes per minute, seconds per stroke, distance per stroke, and speed from stroke count and time.
Distance Per Stroke Calculator
Calculate swimming distance per stroke, strokes per length, stroke rate, swim speed, and stroke index from distance, strokes, and time.
SWOLF Calculator
Calculate swimming SWOLF score from length time and stroke count, plus pace, distance per stroke, and stroke-rate estimates.
Swim Interval Sendoff Calculator
Calculate swim sendoff times from repeat distance, pace per 100, target rest, and repeat count, with total set time and pacing notes.
Open Water Swim Pace Calculator
Calculate open-water swim pace per 100 m, per 100 yd, average speed, and projected times for common race distances.
Progressive Overload Calculator
Plan load, rep, set, and volume increases for strength training without making the next workout jump too aggressive.
Deload Week Calculator
Plan a deload week by reducing training volume, load, or both while keeping the workout structure clear.
Rowing Split Calculator
Calculate average rowing split per 500 meters from distance and total time, then estimate watts, speed, and projected times.
Barbell Plate Calculator
Calculate which plates to load on each side of a barbell for a target gym weight.
Rowing Watts To Split Calculator
Convert rowing watts into split pace per 500 meters and estimate times for common rowing distances.
Dumbbell Volume Calculator
Calculate dumbbell training volume for one-arm, two-arm, unilateral, and bilateral exercises.
Rowing Split To Watts Calculator
Convert a rowing split per 500 meters into watts and estimate times and speed from that pace.
2K Row Pace Calculator
Calculate 2K rowing pace per 500 meters, checkpoint splits, watts, and average speed from a target 2K time.
Time Under Tension Calculator
Calculate time under tension from reps, sets, and lifting tempo for strength and hypertrophy training.
Rowing Stroke Rate Calculator
Calculate rowing stroke rate in strokes per minute and analyze seconds per stroke and optional meters per stroke.
Tempo Rep Calculator
Convert lifting tempo into seconds per rep, set duration, and total work time for strength training.
Rest Time Between Sets Calculator
Estimate total rest time, work time, workout block length, and rest-to-work ratio between strength-training sets.
Rowing Distance Calculator
Estimate rowing distance from average split and workout duration, then view kilometers, miles, watts, and speed.
Rowing Calorie Estimate Calculator
Estimate calories burned while rowing using body weight, duration, and MET-based effort level.
Strength Imbalance Calculator
Compare left and right side strength, reps, distance, or power to estimate side-to-side imbalance percentage.
Kayak Pace Calculator
Calculate kayak pace per kilometer, per mile, and per 500 meters, plus average speed and projected times.
Relative Strength Calculator
Calculate strength-to-body-weight ratio for barbell lifts, calisthenics, and sport performance.
AMRAP Rep Calculator
Estimate one-rep max and training max from an AMRAP set using common rep-max formulas.
Paddling Speed Calculator
Calculate average paddling speed plus pace per kilometer and pace per mile from distance and total time.
Basketball Shooting Percentage Calculator
Calculate basketball field goal percentage, miss rate, optional 2P%, 3P%, eFG%, estimated shot points, and target makes.
Cluster Set Calculator
Plan cluster sets by splitting total reps into mini-sets and estimating intra-cluster rest time.
Cooper Test VO2 Max Calculator
Estimate VO2 max from a 12-minute Cooper run test, with distance conversions, speed, pace, and interpretation notes.
Effective Field Goal Percentage Calculator
Calculate basketball eFG% from FGM, 3PM, and FGA, with FG%, three-point bonus, and target context.
Rockport Walk Test Calculator
Estimate VO2 max from a one-mile Rockport walk test using age, sex, weight, walk time, and finishing heart rate.
Beep Test Score Calculator
Calculate beep test distance, shuttles, final speed, estimated VO2 max, and result interpretation from level and shuttle score.
True Shooting Percentage Calculator
Calculate basketball TS% from points, field goal attempts, and free throw attempts with true shot attempts and target points.
Points Per Possession Calculator
Calculate basketball points per possession from known possessions or estimate possessions from box-score inputs.
Step Test Recovery Calculator
Calculate recovery heart rate, heart-rate drop, and Queen’s College step test VO2 max estimate from step-test pulse data.
Assist Turnover Ratio Calculator
Calculate basketball assist-to-turnover ratio with assist share, turnovers per assist, per-game, and per-36-minute context.
Vertical Jump Power Calculator
Estimate peak power from vertical jump height and body mass using Sayers, Harman, or Lewis-style equations.
Baseball Batting Average Calculator
Calculate baseball batting average from hits and at-bats with hit rate, outs, and target-average scenarios.
Standing Broad Jump Calculator
Calculate standing broad jump distance, body-height ratio, symmetry notes, and lower-body power interpretation.
Push Up Test Calculator
Score push-up test reps, reps per minute, bodyweight volume estimate, and muscular endurance interpretation.
Slugging Percentage Calculator
Calculate baseball slugging percentage from singles, doubles, triples, home runs, and at-bats with total bases and ISO.
On Base Percentage Calculator
Calculate baseball on-base percentage from hits, walks, hit by pitch, at-bats, and sacrifice flies.
Sit Up Test Calculator
Score sit-up or curl-up test reps, reps per minute, endurance band, and progression targets.
OPS Calculator
Calculate baseball OPS from OBP and SLG directly or from component hitting totals.
Plank Test Calculator
Score plank hold time, convert duration, estimate endurance band, and set next core endurance milestones.
Acute Chronic Workload Ratio Calculator
Bowling Economy Rate Calculator
Calculate economy rate for cricket bowlers. Track runs conceded per over for bowling efficiency.
Cricket Net Run Rate Calculator
Calculate net run rate (NRR) in cricket. Compare team performance across matches with standard metric.
Cricket Required Run Rate Calculator
Calculate required run rate needed in cricket to reach target score with overs remaining.
Cricket Run Rate Calculator
Calculate run rate in cricket. Track scoring pace (runs per over) for batsmen and teams.
Downhill Pace Adjustment Calculator
Calculate adjusted pace for downhill running. Account for negative grade when pacing downhill efforts.
ERA Calculator
Calculate baseball earned run average from earned runs and innings pitched, using baseball-style outs.
Exercise Minutes Equivalent Calculator
Grade Percent Calculator
Grip Strength Ratio Calculator
Calculate grip strength relative to body weight, left-right asymmetry, average grip, and interpretation notes.
Incline Distance Calculator
Calculate actual distance covered on a slope. Account for incline gradient when measuring running or hiking distance.
Mountain Bike Climb Time Calculator
Estimate climb time on mountain bike based on grade, distance, and fitness level.
Running Mileage Progression Calculator
Session RPE Training Load Calculator
Calculate session training load using RPE × duration. Sports science tool for coaches and athletes.
Ski Vertical Feet Calculator
Calculate total vertical feet skied in a day. Track vertical from multiple runs for ski fitness tracking.
Snowshoe Pace Calculator
Estimate running pace on snowshoe vs bare ground. Calculate pace slowdown for snow depth and conditions.
Soccer Goals Per 90 Calculator
Calculate goals per 90 minutes for soccer players. Compare scoring rates across different playing times.
Soccer Points Per Game Calculator
Calculate points per game (PPG) for soccer teams. Track win-draw-loss records and point accumulation rates.
Stair Climb Calculator
Calculate elevation gain from stairs climbed. Estimate climbing time and effort for stair training.
Taper Percentage Calculator
Tennis Break Point Conversion Calculator
Calculate break point conversion percentage in tennis. Track efficiency on break points.
Tennis First Serve Percentage Calculator
Calculate first serve percentage in tennis. Track serve effectiveness and consistency.
Training Monotony Calculator
Training Strain Calculator
Treadmill Elevation Gain Calculator
Convert treadmill grade and distance to vertical elevation gain in feet or meters.
Volleyball Hitting Percentage Calculator
Calculate hitting percentage in volleyball. Account for kills, errors, and total attacks for player evaluation.
WHIP Calculator
Calculate WHIP (Walks + Hits Per Innings Pitched) for baseball pitchers. Evaluate pitcher effectiveness and compare performance.
Weekly Mileage Increase Calculator
Weekly Training Load Calculator
Workout Density Calculator
Waist To Height Ratio Calculator
Calculate waist-to-height ratio, ratio percentage, waist target levels, and interpretation notes from waist and height measurements.
Waist To Hip Ratio Calculator
Calculate waist-to-hip ratio with sex-specific interpretation, measurement guidance, and body-composition context.
Navy Body Fat Calculator
Estimate body fat percentage with the U.S. Navy circumference method and optional fat mass / lean mass outputs.
Lean Body Mass Calculator
Estimate lean body mass from body-fat percentage or from Boer, James, and Hume equations using height, weight, and sex.
Fat Free Mass Index Calculator
Calculate FFMI, normalized FFMI, fat-free mass, fat mass, and interpretation notes from weight, height, and body-fat percentage.
Target Body Fat Weight Calculator
Estimate target body weight from current weight, current body fat percentage, and target body fat percentage.
Body Fat Loss Calculator
Estimate fat mass to lose, target weight, weekly fat-loss pace, and lean-mass assumptions from current and target body-fat percentage.
Karvonen Heart Rate Calculator
Calculate Karvonen heart-rate zones from age, resting heart rate, max heart-rate method, and heart-rate reserve.
Heart Rate Reserve Calculator
Calculate heart-rate reserve and custom HRR-based training target ranges from max and resting heart rate.
Resting Heart Rate Zone Calculator
Interpret resting heart rate and optionally estimate HRR-based training zones from age and resting heart rate.
Hiking Time Calculator
Estimate hiking time from distance, elevation gain, descent, terrain difficulty, breaks, and pace assumptions.
Sweat Rate Calculator
Calculate sweat rate from body-weight change, fluids consumed, urine loss, and exercise duration.
Fluid Replacement Calculator
Estimate exercise fluid replacement from sweat rate, duration, and target replacement percentage.
Naismith Rule Calculator
Calculate classic Naismith hiking time from distance and ascent, with optional pace, descent, and break adjustments.
Elevation Gain Pace Calculator
Calculate elevation gain per distance, vertical speed, grade, pace, and climbing intensity from trail distance, gain, and time.
Sodium Loss Calculator
Estimate sodium loss from sweat rate, sweat sodium concentration, duration, and planned sodium intake.
Race Hydration Calculator
Plan race hydration from sweat rate, race duration, replacement target, aid-station spacing, and cup size.
Vertical Speed Calculator
Calculate vertical speed in meters per hour, feet per hour, VAM, and time to climb from elevation gain and elapsed time.
Long Run Hydration Calculator
Estimate long-run hydration needs from duration, sweat rate, weather adjustment, and bottle capacity.
VAM Calculator
Calculate VAM, vertical ascent meters per hour, from elevation gain and time for hiking, cycling, and trail running.
Carbs Per Hour Calculator
Calculate carbohydrate intake per hour from gels, drinks, chews, food, and event duration.
Trail Cutoff Time Calculator
Calculate the required trail pace to meet a cutoff time, including distance, elevation gain, aid-station time, and safety buffer.
Marathon Fueling Calculator
Plan marathon fueling from finish time, carbohydrate target, drink carbs, and gel size.
Pack Weight Percentage Calculator
Calculate pack weight as a percentage of body weight and interpret hiking, backpacking, and rucking load levels.
Cycling Fueling Calculator
Plan cycling fueling from ride duration, carb target, bottles, gels, and food.
Ruck Pace Calculator
Calculate ruck pace, speed, load percentage, and projected finish times from distance, time, body weight, and ruck weight.
Rucking Calorie Calculator
Estimate rucking calories burned from body weight, ruck load, duration, pace, and terrain using MET-based options.
Triathlon Fueling Calculator
Plan triathlon fueling across bike and run segments with separate carbohydrate targets.
Hiking Calorie By MET Calculator
Estimate hiking calories burned from body weight, duration, MET intensity, and optional pack load.
Race Gel Schedule Calculator
Create a race gel schedule from race duration, first gel timing, interval, and carbs per gel.
Jump Rope Length Calculator
Calculate jump rope length from height, skill level, rope style, and handle length, with cable-only and total-length outputs.
Jump Rope Calorie Calculator
Estimate jump rope calories from body weight, duration, intensity, and optional jump cadence using MET values.
Treadmill Incline Calculator
Calculate treadmill incline grade, angle, elevation gain, vertical speed, and optional walking oxygen-cost estimate.
Treadmill Speed Converter
Convert treadmill speed between mph, km/h, m/s, meters per minute, pace per mile, and pace per kilometer.
Treadmill Calorie By Incline Calculator
Estimate treadmill calories from speed, incline, duration, body weight, and walking or running equation choice.
Elliptical Stride Distance Calculator
Calculate elliptical distance from stride length, stride count, time, cadence, and optional calorie estimate.
Stairmaster Floors Calculator
Estimate StairMaster floors, vertical gain, step rate, climbing speed, and optional calories from steps or time.
Golf Club Distance Gapping Calculator
Analyze golf club distance gaps from carry distances and flag clubs that are too close, too far apart, or missing coverage.
Golf Swing Speed Distance Calculator
Estimate golf carry distance, total distance, and ball speed from club speed, club type, smash factor, and strike quality.
Golf Handicap Differential Calculator
Calculate golf score differential from adjusted gross score, course rating, slope rating, and PCC adjustment.
Speed From Cadence Calculator
Calculate cycling speed from cadence, chainring, rear cog, tire circumference, and gear ratio, then compare rollout, development, and distance per pedal revolution.
Cycling Climb Time Calculator
Estimate cycling climb time from climb distance, elevation gain, average power, rider weight, bike weight, and climbing assumptions.
Cycling Gradient Calculator
Calculate cycling gradient from elevation gain and distance, convert between percent grade, angle, rise, run, and climbing difficulty notes.
Cycling Power To Climb Calculator
Estimate the cycling power needed to climb at a target speed using rider weight, bike weight, gradient, rolling resistance, and aerodynamic assumptions.
Bike Tire Circumference Calculator
Calculate bicycle tire circumference from wheel diameter or measured rollout, then use it for bike computers, speed, cadence, and gearing calculations.
Bike Tire Pressure Calculator
Estimate starting bike tire pressure from rider weight, bike type, tire width, surface, tube setup, and front/rear weight distribution.
Bike Chain Length Calculator
Estimate bicycle chain length from chainstay length, largest chainring, largest rear sprocket, drivetrain type, and link rounding.
Saddle Height Calculator
Estimate cycling saddle height from inseam using common starting formulas and fit notes for road, gravel, indoor, and general riding.
Cycling Calorie By MET Calculator
Estimate calories burned while cycling from body weight, duration, and MET intensity, with moderate, vigorous, indoor, and outdoor cycling examples.
Indoor Bike Distance Calculator
Estimate indoor bike distance from speed, cadence and rollout, or duration and average speed, with notes for spin bikes and trainers.