Tennis Serve Percentage Calculator Formula

Understand the math behind the tennis serve percentage calculator. Each variable explained with a worked example.

Use the Tennis Serve Percentage Calculator

Formulas Used

First Serve %

first_serve_pct = round(first_serves_in / first_serve_attempts * 1000) / 10

Ace %

ace_pct = round(aces / first_serve_attempts * 1000) / 10

Double Fault %

double_fault_pct = round(double_faults / second_serve_attempts * 1000) / 10

Total Service Points

total_service_points = first_serve_attempts

Variables

VariableDescriptionDefault
first_serves_inFirst Serves In55
first_serve_attemptsFirst Serve Attempts80
acesAces8
double_faultsDouble Faults3
second_serve_attemptsDerived value= first_serve_attempts - first_serves_incalculated

How It Works

How Tennis Serve Stats Are Calculated

Formulas

  • First Serve % = First Serves In / First Serve Attempts
  • Ace % = Aces / First Serve Attempts
  • Double Fault % = Double Faults / Second Serve Attempts

    • Benchmarks

    A first serve percentage of 60-65% is typical for professional players. Ace rates vary from 5-15% depending on surface and serve speed.

    Worked Example

    55 first serves in out of 80 attempts, 8 aces, 3 double faults.

    first_serves_in = 55first_serve_attempts = 80aces = 8double_faults = 3
    1. 01First serve % = 55 / 80 = 68.8%
    2. 02Ace % = 8 / 80 = 10.0%
    3. 03Second serve attempts = 80 - 55 = 25
    4. 04Double fault % = 3 / 25 = 12.0%

    Ready to run the numbers?

    Open Tennis Serve Percentage Calculator