Winning Percentage Calculator

What is a winning percentage?

A winning percentage measures how often a team or player wins out of all the games they have played. It is widely used in sports standings to compare records of different lengths on a common 0-100% scale. In the most common convention a tie (or draw) is treated as half a win, so a tied game contributes 0.5 to the win total rather than counting as a full win or a full loss.

Formula

The denominator is the total number of games played. The result is only defined when at least one game has been played.

How to use

1. Enter the number of Wins.
2. Enter the number of Losses.
3. Enter the number of Ties (leave it at 0 if there were none).
4. Read the Winning percentage, shown as a percentage value.

The percentage stays blank until both wins and losses are filled in and the total number of games is greater than zero.

Worked example

Suppose a team has 30 wins, 20 losses, and 0 ties:

Now suppose the team has 30 wins, 18 losses, and 2 ties. Each tie counts as half a win, so the numerator is $30 + \frac{2}{2} = 31$ and the total games is $30 + 18 + 2 = 50$:

FAQ

Why do ties count as half a win? Counting a tie as half a win keeps the scale symmetric: a tie helps and hurts your record equally, landing exactly between a win and a loss. This is the standard convention used by most professional sports leagues.

What if I leave ties blank? A blank ties field is treated as 0, so the calculator simply divides wins by the sum of wins and losses. You still need to fill in wins and losses for a result to appear.