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Baseball Stolen Base Success Rate Calculator

Enter SB and CS to review current steal efficiency, the break-even rate where attempts help the offense, and the future successes needed for a target.

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Base runningHelping run expectancyAlready on target

Current steal read

81.5%

.815

Attempts

27

Start with success rate and attempts, then see whether the runner is adding offensive value.

0%Target success rate 80%100%

Break-even rate

69.2%

Vs break-even +12.3%

Estimated run value

2.15

Efficient runner

Net steals

17

SB 22 / CS 5

Best possible rate

87.2%

+12 Future attempts

Stolen base record

Use it by player, team, split, or scouting period to plan the rest of the season.

Target success plan

See how many future successful steals are needed to clear the target rate.

Steals needed for target

10

Caught allowed

2

Required future rate

83.3%

Status

Already on target

Target path

10 SB / 2 CS

Projected target rate 82.1%

Conservative path

10 SB / 2 CS

Projected target rate 82.1%

Perfect finish

12 SB / 0 CS

Projected target rate 87.2%

How to read stolen base success rate

Stolen base success rate is successful steals divided by total steal attempts. This calculator also compares it with a break-even rate so you can judge whether the attempts add value.

Usage notes

  • Enter SB and CS for the current success rate.
  • Adjust run values to calculate a break-even success rate.
  • Add a target rate and future attempts to estimate the required successes.

Frequently asked questions

Why does break-even rate matter?expand_more

A caught stealing costs an out, so a runner must succeed often enough for steal attempts to improve expected runs.

Can I use only SB and CS?expand_more

Yes. SB and CS are enough for the core success rate. The extra fields help with planning and value context.

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