Baseball age calculator.
Enter a date of birth and get league age plus the divisions it is eligible for. Baseball and softball use different cutoff dates — this uses the right one for each.
- Cost
- Free
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- Your data
- Stays in the browser
Nothing is sent anywhere. The date stays in your browser.
Check it against your league. Little League determines league age as the player's actual age on August 31 of the current year. Cutoffs differ between organisations and have changed in the past, so confirm with the league your child is actually registering with.
Source: Little League — League Age Determination · verified 2026-09-14
League age is not how old your child is. It is a number derived from their birthdate against a cutoff date the organisation sets, and it is what actually determines which division they play in. A player can be league age 12 while being 11 years old for most of the season.
Little League uses two different dates, which is what catches out families with a child in each sport. Baseball uses the player’s actual age on August 31 of the current year. Softball uses their actual age on December 31 of the previous year.
This calculator is a convenience, not an authority. Little League publishes an official age calculator and official age charts each season, and your local league makes the final placement.
- League age and divisions — the full division tables for baseball and softball
- Field dimensions by age — what changes when a player moves up
- Bat rules by league — which certification each division requires
- Lineup generator — batting order and fielding rotation
How is Little League age determined?
For Little League Baseball, league age is the player's actual age on August 31 of the current year. For Little League Softball, it is the player's actual age on December 31 of the previous year.
Is the baseball and softball age cutoff the same?
No. In Little League, baseball uses August 31 of the current year and softball uses December 31 of the previous year. A brother and sister born days apart can end up in differently numbered divisions.
Why is my child's league age different from their actual age?
Because league age is fixed against a cutoff date rather than changing on their birthday. Depending on when the birthday falls relative to that cutoff, league age can differ from actual age for part or all of the season.
What division is my child in?
League age determines eligibility, and the ranges overlap on purpose — local leagues place players within them, so more than one division can be correct for the same player. Your local league makes the final placement.
Do all youth baseball leagues use the same cutoff?
No. Cutoff dates vary between organisations, and travel organisations often differ from the rec league in the same town. Use the date published by the organisation your child is registering with.
One place for the season.
Schedule, roster, lineups, and your player's stats — free for every family, and they follow the player through every division.