Softball size
An official softball is 3.78–3.86 in (9.6–9.8 cm) across and 11.88–12.13 in (30.2–30.8 cm) around, weighing 6.25–7 oz (177–198 g).
Measurements
| Size | Circumference | Diameter | Weight | Who uses it |
|---|---|---|---|---|
| 12-inch | 11.88–12.13 in (30.2–30.8 cm) | 3.78–3.86 in (9.6–9.8 cm) | 6.25–7 oz (177–198 g) | Adult and high school fastpitch and slowpitch |
What to know
Younger fastpitch players often use an 11-inch ball.
Diameter is calculated from the official circumference (diameter = circumference ÷ π).
Questions people ask
What is the diameter of a softball?
3.78–3.86 in (9.6–9.8 cm).
How much does a softball weigh?
6.25–7 oz (177–198 g).
Related sizes
Sources and method
- USA Softball equipment standards
Imperial and metric values are converted with 1 in = 25.4 mm exactly and rounded only for display. Found a mistake? Report it and we will correct the page.