MyBallPlayer

Free baseball & softball stat calculators

Punch in the numbers, get the stat instantly — with the formula explained in plain English.

Batting Average Calculator

Enter a player's hits and at-bats to get their batting average instantly. No sign-up needed.

On-Base Percentage Calculator

Enter the plate line to get on-base percentage (OBP) — how often a player reaches base by any means.

Slugging Percentage Calculator

Enter the hit breakdown to get slugging percentage (SLG) — total bases per at-bat, a measure of power.

OPS Calculator

Enter a full hitting line and get AVG, OBP, SLG and OPS together — the one-number summary coaches reach for first.

ERA Calculator

Enter earned runs and innings pitched to get ERA. Set the game length for youth ball (often 6 or 7 innings).

WHIP Calculator

Enter walks, hits and innings pitched to get WHIP — how many baserunners a pitcher allows per inning.