Tennis Serve Percentage Calculator

Calculate first serve percentage from serves in and total attempts.

About Tennis Serve Percentage Calculator

The serve percentage is the share of first serve attempts that first serves in represents, expressed as a percentage. The same figure is also shown per 1,000 and as a "one in every N" odds statement, which is easier to reason about when the rate is very small. Absolute counts hide scale — a rate normalises the number so you can compare periods, channels or cohorts of different sizes, where higher is better.

Formula

Tennis Serve Percentage

First Serve Percentage = First serves in ÷ First serve attempts × 100

First serves in: The subset being measured
First serve attempts: The full population it is drawn from

Worked example

With the default values below, Tennis Serve Percentage Calculator returns First Serve Percentage of 65.38%. Change any input above and every figure here is recalculated in your browser.

Inputs used

First serves inminimum 0: 68
First serve attemptsminimum 0: 104

Results

First Serve Percentage: 65.38%
Rating: C — Fair
Remaining: 36
Equivalent per 1,000: 653.8

Step by step

1Values used
2Tennis Serve Percentage
3First Serve Percentage= 65.38
4Rating= C — Fair
5Remaining= 36
6Equivalent per 1,000= 653.8

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
These figures are estimates based on population-average formulas and are intended for training and recreational planning only. They are not medical advice. Consult a qualified health professional before starting or changing an exercise programme, particularly if you have an existing medical condition.
This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

These figures are estimates based on population-average formulas and are intended for training and recreational planning only. They are not medical advice. Consult a qualified health professional before starting or changing an exercise programme, particularly if you have an existing medical condition.

Frequently Asked Questions

How is Tennis Serve Percentage calculated?

First Serve Percentage = First serves in ÷ First serve attempts × 100 The serve percentage is the share of first serve attempts that first serves in represents, expressed as a percentage. The same figure is also shown per 1,000 and as a "one in every N" odds statement, which is easier to reason about when the rate is very small.

Why does Tennis Serve Percentage matter?

Absolute counts hide scale — a rate normalises the number so you can compare periods, channels or cohorts of different sizes, where higher is better.

What values do I need to enter?

This calculator takes 2 inputs: First serves in, First serve attempts. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.