Sports Gear Tools
20 data-driven calculators for runners, cyclists, golfers, gym athletes, and more. No login required.
Running & Endurance
Running Pace Calculator
Calculate pace, finish time, or distance. Enter any two values to find the third. Includes race split projections.
Use Calculator →Race Time Predictor
Predict your finish time at any race distance from a recent result using the Riegel formula. Get training paces too.
Use Calculator →VO2 Max Estimator
Estimate your aerobic fitness from a 1.5 mile run or Cooper 12-minute test. See your category by age and gender.
Use Calculator →Swim Pace Calculator
Calculate swim pace per 100m or 100yd, total time, or distance. Includes triathlon swim splits for Sprint through Ironman.
Use Calculator →Golf
Golf Shaft Flex Calculator
Find your ideal shaft flex based on driver swing speed, ball flight preference, and playing tempo.
Use Calculator →Golf Handicap Calculator
Calculate your WHS Handicap Index from up to 5 recent scores. Includes course rating and slope rating inputs.
Use Calculator →Club Distance Calculator
Estimate how far you should hit every club based on your driver distance. Full bag distance chart instantly.
Use Calculator →Driver Loft Optimizer
Find your optimal driver loft based on swing speed and attack angle. Maximize carry distance off the tee.
Use Calculator →Cycling
Bike Frame Size Calculator
Find your ideal road, mountain, or gravel bike frame size based on height and inseam measurement.
Use Calculator →Gear Ratio Calculator
Calculate speed at cadence for every chainring and cog combo. Find your climbing gear and top speed.
Use Calculator →Power-to-Weight Calculator
Calculate your W/kg and see how you rank from Cat 5 to professional. Includes climbing performance context.
Use Calculator →FTP Calculator
Calculate your Functional Threshold Power from a 20-min, 8-min, or ramp test. Get all 7 training zones.
Use Calculator →Gym & Fitness
One Rep Max Calculator
Calculate your 1RM for squat, bench, deadlift, or any lift. Uses Epley, Brzycki, and Lander formulas with full percentage chart.
Use Calculator →Calorie Burn Calculator
Estimate calories burned for 13 sports and activities. Running, cycling, HIIT, pickleball, and more. Includes weekly projections.
Use Calculator →BMI & Healthy Weight Calculator
Calculate BMI and healthy weight range with important context for athletes. Optional US Navy body fat estimate.
Use Calculator →Snow & Racket Sports
Ski Length Calculator
Find the right ski length based on your height, weight, skill level, and preferred terrain.
Use Calculator →Snowboard Size Calculator
Find your ideal snowboard length based on height, weight, boot size, and riding style. Includes wide board recommendation.
Use Calculator →Tennis String Tension Calculator
Find your optimal string tension based on racket head size, playing style, string type, and court surface.
Use Calculator →Running Shoe Finder
Find the right running shoes based on pronation, terrain, weekly mileage, and foot type.
Use Finder →Pickleball Paddle Selector
5-step quiz to find your ideal paddle specs — weight, core thickness, surface, and grip size. Covers power, control, and arm-friendly options.
Use Selector →