⚾Baseball Stats Calculator (ERA / AVG / OPS)
Calculate pitcher ERA, hitter batting average, OBP, SLG, and OPS instantly. For amateur baseball and watching games.
🔒 Browser-based✓ No watermark✓ No signup
How to use
- 1Pick the stat (ERA/AVG/OPS, etc.).
- 2Enter the inputs (earned runs, innings, hits, at-bats).
- 3The result calculates instantly.
FAQ
What's OPS?+
On-Base Percentage (OBP) + Slugging Percentage (SLG). A combined hitter metric: 0.800+ is good, 0.900+ is elite.
How is ERA calculated?+
(Earned Runs × 9) ÷ Innings. Below 2.50 is ace-level, 4.00~4.50 is league average, 5.00+ is poor.
Batting average vs on-base percentage?+
AVG is hits/at-bats. OBP is (hits+walks+HBP)/(at-bats+walks+HBP+sac flies). OBP is a more complete stat.
How is SLG calculated?+
(singles×1 + doubles×2 + triples×3 + HR×4) ÷ at-bats. 0.500 is good, 0.600+ is slugger territory.
Can it calculate WAR?+
WAR (Wins Above Replacement) is too complex for this tool. Check official KBO/MLB stat sites.
Same formulas for KBO and MLB?+
Core stats (AVG, ERA, OPS) are identical. League averages differ, so the same number can mean different things.