Baseball Stats Calculator

About This Baseball Stats Calculator

This advanced baseball statistics calculator goes beyond basic batting average and ERA. It includes modern sabermetric metrics used by MLB scouts, college recruiters, and serious players to evaluate true performance. Calculate batting average (AVG), on-base percentage (OBP), slugging percentage (SLG), OPS, BABIP, wOBA, and advanced pitching stats like ERA, WHIP, FIP, and K/9.

Key Stats Explained

• Batting Average (AVG): Hits ÷ At Bats — Traditional measure of hitting success
• On-Base Percentage (OBP): (H + BB + HBP) ÷ (AB + BB + HBP + SF) — How often a batter reaches base
• Slugging Percentage (SLG): Total Bases ÷ At Bats — Measures power hitting
• OPS: OBP + SLG — Gold-standard offensive metric (MLB average ~.700)
• BABIP: (H - HR) ÷ (AB - K - HR + SF) — Batting average on balls in play (typically .300 league average)
• wOBA: Weighted On-Base Average — Advanced metric that properly weights each offensive event
• Earned Run Average (ERA): (ER × 9) ÷ IP — Standard pitching effectiveness metric
• WHIP: (BB + H) ÷ IP — Walks + Hits per inning pitched (elite <1.00)
• FIP: ((13×HR) + (3×BB) - (2×K)) ÷ IP + 3.10 — Fielding Independent Pitching
• K/9 & BB/9: Strikeouts and walks per 9 innings

How to Use

• Select between Batting Stats or Pitching Stats mode
• Enter the player's cumulative statistics for the season or career
• Click "Calculate" to see basic stats, advanced metrics, and 162-game projections
• Use projections to estimate full-season performance from partial-season data

Why Advanced Stats Matter

Traditional stats like batting average and ERA tell only part of the story. OPS correlates better with run production than AVG. BABIP helps identify luck vs skill. FIP isolates what a pitcher controls (HR, BB, K) from defense. Our calculator gives you the complete picture.

Frequently Asked Questions

• What is a good OPS? — .900+ Elite, .800+ All-Star, .700+ Average, .600+ Below average
• What is a good WHIP? — 1.00 Elite, 1.20 Good, 1.40 Average, 1.60+ Below average
• What is FIP? — Fielding Independent Pitching; ERA estimator based on HR, BB, K (scale similar to ERA)
• How accurate are 162-game projections? — They assume consistent performance; best used for partial-season evaluation.
• What's the difference between wOBA and OPS? — wOBA is more accurate because it weights each event correctly (e.g., HR > 2B).