About the Service Points Won Calculator
Percentage of points won on serve — the backbone of tennis performance analysis.
Also known as: service points won, serve win percentage tennis, hold percentage.
How to use this calculator
- Enter service points won, service points played.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Open “Step-by-step” to see how the answer was worked out.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Service points won = Service points won ÷ Service points played × 100
Worked example
Using the values pre-filled in the calculator above:
- Service points won = 45
- Service points played = 68
the calculator returns:
- Service points won: 66.18%
Working
Service points won = 45 ÷ 68 × 100 = 66.1765%