Win percentage calculator
The calculator above does the two steps a win percentage needs: divide wins by games played, then multiply by 100. Below, how ties are handled and how to check the answer.
12 × 12 = 144
Adding 12 to itself 12 times gives the same answer.
The formula
Win percentage = wins ÷ games played × 100. Games played means every game, wins and losses together. It is not wins divided by losses.
Decide what a tie counts for before you divide. Sports do not agree: some competitions treat a tie as half a win, others leave ties out of the total altogether, and the same record produces a different percentage under each rule. Whichever convention you use, say which one it is next to the figure and show the division that produced it — a percentage quoted without its formula cannot be checked by anyone.
Worked example
A team wins 27 of 41 games. First 27 ÷ 41 = 0.6585. Then 0.6585 × 100 = 65.85, so 65.9%. Use the calculator twice: the division first, and the multiplication on the number it gives you.
What to do with ties
There is no single rule, so pick one and say which you used.
- Half a win. Add half the ties to the wins, then divide by all games. Common in league standings.
- Ignore them. Divide wins by wins plus losses only. This is the friendliest of the three.
- Count them as losses. Divide wins by all games. This gives the lowest figure.
A 10-5-5 record reads 62.5%, 66.7% or 50% depending on the choice. Same season, three answers.
When the answer looks wrong
- Over 100% — you divided by wins or by losses instead of by total games.
- Something like 0.65 — that is the decimal, so multiply it by 100. Baseball prints it that way on purpose, as .650.
- A round 50% you did not expect — recount. Wins plus losses plus ties has to equal games played.
Win rate over a stretch
To compare two halves of a season, work each one out separately. Do not average the two percentages together: a 20-game run and a 6-game run do not carry the same weight, and averaging them quietly treats them as if they did.
If the percentage part is what is tripping you up, read how to find a percentage on a calculator. To average several percentages properly, use the percentage average calculator. The rest of the tools sit on the calculators page.