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Tennis Hold and Break Percentage Service Stats Calculator

Effective serve win% = p1st × w1st + p2nd × w2nd.

Calculates effective service point win percentage from first-serve-in percentage and point win rates on first and second serve. A key indicator of service dominance in tennis.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Eff. win% = (p1st/100)×(w1st/100) + (1−p1st/100)×(w2nd/100)

In depth

Calculates effective service point win percentage from first-serve-in percentage and point win rates on first and second serve. A key indicator of service dominance in tennis.