How the rest days work
Rest is counted in calendar days. A pitcher who needs 3 days of rest after throwing on a Monday can pitch again on Friday, since Tuesday, Wednesday, and Thursday are the rest days. Add a date in the calculator and it does that count.
Pitchers in league age 15 and 16 use a different rest table with higher thresholds, so the same pitch count needs fewer days of rest. The table below shows both side by side.
Check your own league before game day
These are Little League's regular season rules as published on the date shown below. Little League also has rules for finishing a batter when a pitcher hits a limit, for catchers who pitch, and for tournaments. Other organizations, travel teams, and high schools set their own limits. When your league's rulebook says something different, it wins.
Questions
What happens if a pitcher reaches the limit in the middle of a batter?
Little League lets the pitcher finish that batter in most cases. How the count is recorded for rest days in that situation is spelled out in the league regulations, so check them with your league officials.
Is league age the same as the player's age?
Not always. League age is set by a cutoff date each season. Little League publishes an age chart for every season, linked from its pitching rules page.
Do these limits apply to travel ball or high school?
No. These are Little League rules. Travel organizations and state high school associations publish their own.
Is my data stored?
No. The math runs in your browser and nothing you type is sent anywhere or put in analytics.
Sources
Formulas and rules checked against these sources on October 28, 2026. Leagues and associations change their rules, so when your league's rulebook differs, follow your league.