Win rate calculator

How to use the win rate calculator

This calculator turns your wins and losses into a win percentage and counts your total games. It also works out how many wins in a row you need to reach a target win rate. Results update as you type, and nothing is saved between visits.

Step by step

1. Enter your record in Wins and Losses. The defaults are 60 and 40.
2. Read Win rate, shown to one decimal place, and Total games, which is wins plus losses.
3. Under Reach a target win rate, type a percentage into Target win rate (%). The default is 65 and the field allows up to 99.
4. Read Consecutive wins needed. It shows "Already there" if you are at or above the target, and "Impossible" for a 100% target once you have lost a game.

How the numbers are worked out

Win rate is wins ÷ (wins + losses) × 100. For the target, the tool finds the smallest number of straight wins, x, that makes (wins + x) ÷ (games + x) reach the target. Rearranged, that is:

x = (target × games − 100 × wins) ÷ (100 − target), rounded up to a whole game.

A target of 100% can never be reached once you have lost a game, because every win adds to the total games too.

Worked examples

With the defaults, 60 wins and 40 losses give 60 ÷ 100 = 60.0% over 100 games. For a 65% target: (65 × 100 − 100 × 60) ÷ (100 − 65) = 500 ÷ 35 = 14.29, which rounds up to 15 wins in a row. Check: 75 ÷ 115 = 65.2%, while 74 ÷ 114 = 64.9% falls just short.

The same 60% record is much easier to move early on. At 6 wins and 4 losses, reaching 65% takes (650 − 600) ÷ 35 = 1.43, so 2 wins (8 ÷ 12 = 66.7%). At 600 wins and 400 losses it takes 5,000 ÷ 35 = 142.86, so 143 wins in a row.

When you will not win every game

A long win streak is rare, so it helps to plan around a realistic future win rate. Swap the 100 in the formula for the rate you expect to win from now on:

games needed = (target × games − 100 × wins) ÷ (future rate − target)

Starting at 60 and 40, if you win 70% of your next games, reaching 65% takes (6,500 − 6,000) ÷ (70 − 65) = 500 ÷ 5 = 100 more games. After those, you would have 60 + 70 = 130 wins out of 200, which is exactly 65%. If your future rate is at or below the target, you will never reach it, however many games you play.

Small samples swing a lot

A 3 and 1 start is 75%, but one more loss drops it to 3 ÷ 5 = 60%. Over a handful of games, a single result changes the percentage by several points. Wait until you have a decent number of games before reading much into your win rate.

Tips and common mistakes

• Typing total games into Losses. The tool adds wins and losses itself. If your stats page shows 100 games and 60 wins, enter 40 losses, not 100.
• Draws and ties. There is no draws field, so the result is wins out of wins plus losses. If your game counts draws as games played, add them to Losses to match its figure.
• Reading the rounded value. The win rate shows one decimal, so it can round up to the target. At 742 wins and 400 losses the exact rate is 64.97%, which shows as 65.0% but is still under 65. The wins-needed box uses the exact value, so trust it.
• Only tracking wins. In shooters, pairing your win rate with your K/D ratio gives a fuller view of how matches are going.