⚽ 23 Calculators · 10 Topics · Updated April 2026

Sports Calculators

Free online sports calculators with instant results, real formulas, and detailed explanations.

Browse by Topic

Betting

4 calculators

Sports Betting Payout Calculator

Payout and profit for a wager.

Implied Probability From Odds

Convert odds into implied probability.

Parlay Odds Calculator

Combined odds for a parlay bet.

Kelly Criterion Calculator

Optimal bankroll fraction for a bet.

Baseball

4 calculators

Batting Average Calculator

Hits / at-bats.

Earned Run Average (ERA) Calculator

9 × ER / IP.

Slugging Percentage Calculator

Total bases / at-bats.

On-Base Percentage Calculator

OBP = (H+BB+HBP)/(AB+BB+HBP+SF).

Basketball

4 calculators

Field Goal % Calculator

FG made / attempted.

Free Throw % Calculator

FT made / attempted.

Points Per Game Calculator

PPG from totals.

Shooting Percentage Calculator

FG%.

Football

1 calculator

NFL QB Rating Calculator

Passer rating from passing stats.

Soccer

1 calculator

Soccer Win Probability Calculator

Poisson-based win probability.

Tennis

2 calculators

Tennis Match Probability

Match win probability from point-win %.

Tennis Win Rate Calculator

Match win percentage.

Running

4 calculators

Race Split Plan Calculator

Target splits for even or negative pacing.

Half Marathon Pace Calculator

Pace to hit a half-marathon goal.

5K Pace Calculator

Pace to hit a 5K goal.

10K Pace Calculator

Pace to hit a 10K goal.

Pickleball

1 calculator

Pickleball DUPR Rating Estimator

Approximate DUPR from wins/losses.

Golf

1 calculator

Golf Handicap Calculator

USGA handicap index from recent rounds.

Swimming

1 calculator

Swim Front-Crawl Fatigue Resistance

Slowdown over a set.