Sports Calculators
Pace, scoring averages and training numbers.
Batting Average Calculator
Calculate a baseball or softball batting average from hits and at-bats — and on-base percentage if you add walks, HBP and sacrifice flies.
ERA Calculator
Calculate a pitcher’s earned run average from earned runs and innings pitched, with partial innings and 7- or 9-inning games.
Golf Handicap Calculator
Estimate your golf handicap index from three recent 18-hole scores plus course and slope rating — a simplified take on the WHS formula.
Bowling Average Calculator
Average three bowling games and get your series total and high game in one shot.
Swim Pace Calculator
Turn a swim distance and time into your pace per 100 yards or meters, plus speed.
Cycling Speed Calculator
Get your average cycling speed in mph and km/h — plus minutes per mile — from ride distance and time.
One Rep Max Calculator
Estimate your one-rep max from a submaximal set using the Epley and Brzycki formulas, with a percentage training table.
Marathon Time Predictor
Predict your marathon finish time from a recent 5K, 10K or half marathon using Riegel’s formula.