4 calculators in this category
- Batting Average CalculatorMLB Official Baseball Rules, Rule 9.22Enter hits and at-bats and this calculator returns batting average to three decimal places exactly as an official scorer would…
- On-Base Percentage (OBP) CalculatorMLB Official Baseball Rules, Rule 9.22On-base percentage is the share of plate appearances in which a hitter reaches base by hit, walk or hit-by-pitch. This…
- Slugging Percentage, OPS & ISO CalculatorMLB Official Baseball Rules, Rule 9.22Slugging percentage is total bases divided by at-bats — the average number of bases a hitter earns per official trip to the…
- ERA Calculator (Earned Run Average)MLB Official Baseball Rules, Rule 9.16Enter earned runs and innings pitched and this calculator returns earned run average scaled to a full game — nine innings for…
Which one do you need?
- Batting Average Calculator
- Calculate batting average from hits and at-bats using the official MLB rule, plus plate appearances and how many hits you need to reach a target AVG.
- On-Base Percentage (OBP) Calculator
- Calculate on-base percentage with the official MLB formula including walks, hit-by-pitch and sacrifice flies, plus times on base and the OBP-minus-AVG gap.
- Slugging Percentage, OPS & ISO Calculator
- Calculate total bases, slugging percentage, OPS and isolated power from a hitter's line of hits, doubles, triples, home runs and at-bats in one step.
- ERA Calculator (Earned Run Average)
- Calculate earned run average from earned runs and innings pitched, with .1 and .2 read as thirds of an inning, 7-inning softball support and a league index.