Baseball Age Chart
San Mateo National Little League offers youth baseball for children ages 4 to 14. Parents can use the chart below to determine their child’s current Little League baseball age.
For detailed information on SMNLL baseball divisions, see our Divisions page.
Ready to sign up? Register for Spring 2027 →
How Is Little League Baseball Age Calculated?
The Age Determination Date for a Little League baseball player is a child’s actual age as of August 31 of the season’s calendar year — for the Spring 2027 season, that’s August 31, 2027.
Example: A player born on October 25, 2015 is “league age 11” for the Spring 2027 season, because they will be 11 years old by August 31, 2027.
Questions? Email us at registration@smnlittleleague.com.
