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Winning Percentage Calculator

Turn a win-loss-tie record into a winning percentage and find how many games behind one team is from another.

Level: Grade 6

  • Common Core standard 6.RP.A.2Understand the concept of a unit rate a/b associated with a ratio a:b with b ≠ 0, and use rate language in the context of a ratio relationship.
Printable worksheet

Winning Percentage Calculator

Inputs
How ties count

Most leagues count a tie as half a win and half a loss. Some count it as a loss; some leave ties out of the percentage entirely.

Result

Winning percentage

0.625

A 50-30 record is a .625 winning percentage.

As written in standings
.625
As a percent
62.5%
Games counted
80

See the step-by-step solution ↓

Step-by-step solution

  1. Each tie is worth half a win, so add half the ties to the wins

    50+0.5×0=50

  2. Count every game played, wins, losses and ties, because each one goes on the bottom of the fraction

    G=50+30+0=80

  3. Divide the win credit by the games that count to get the share of games won

    5080=0.625

  4. Write it the way standings do: three decimals, without the zero in front

    0.625 → .625

Test yourself

20 quick questions built from this calculator's formula: work out results, predict what happens when an input changes, and work backward from an answer. Every answer comes with the working.

What this calculator does

Turn a win-loss record into the winning percentage you see in league standings. A winning percentage turns a record such as 50–30 into a single rate. You can then compare teams that have played different numbers of games. Standings in most sports list it to three decimals with no leading zero, so 50–30 appears as .625.

Ties are where leagues differ. This calculator lets you count a tie as half a win, as a loss, or leave it out. It can also work out games behind, the standings measure of how far one team trails another.

Where it's used

Why this math matters outside the classroom:

  • League standings. A team with 50 wins and 30 losses has a winning percentage of 50 ÷ 80, which is .625.
  • Ties as half wins. A soccer team at 8 wins, 4 losses and 4 ties, counting each tie as half a win, has (8 + 2) ÷ 16 = .625.
  • Games behind. A 50–30 team leads a 45–35 team by ((50 − 45) + (35 − 30)) ÷ 2, which is 5 games.
  • Coaching records. Athletic departments report a coach's career winning percentage across seasons with different numbers of games.
  • Fantasy leagues. Fantasy league managers sort standings by winning percentage when teams have played unequal numbers of games.

Grade level and standards: Grade 6; Common Core State Standards for Mathematics 6.RP.A.2. © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.

How to use it

  1. Enter wins, losses and ties. Leave ties at 0 if your sport has none.
  2. Choose how ties count. Half a win is the most common convention.
  3. Tick the games-behind box and enter a second team's wins and losses to compare the two.
  4. Read the winning percentage, its standings-style form, and the games-behind figure if you asked for it.

What the inputs mean

How ties count
Half a win counts each tie as 0.5 of a win on top of the fraction, and as a full game on the bottom. As a loss adds ties to the games played only. Not counted removes ties from both, using wins ÷ (wins + losses).
Other team's wins
The other team's record. A positive games-behind value means the other team trails this one. A negative value means it's ahead.

Formula and method

half a win:  pct = (W + 0.5 × T) ÷ (W + L + T)
as a loss:   pct = W ÷ (W + L + T)
not counted: pct = W ÷ (W + L)
games behind = ((W₁ − W₂) + (L₂ − L₁)) ÷ 2

W is wins, L is losses and T is ties. In the games-behind line, W₁ and L₁ belong to the first team and W₂ and L₂ to the other team. Winning percentage (pct) is win credit divided by the games that count. Only the treatment of ties changes between the three options.

Games behind averages the gap in wins and the gap in losses. Each game the trailing team wins while the leader loses closes the gap by a full game. A win or loss on only one side moves it by half a game. Ties are ignored, which is the usual standings practice.

Worked example

A team is 50–30 with no ties. A rival is 45–35.

  1. Games played: 50 + 30 + 0 = 80.
  2. Winning percentage: 50 ÷ 80 = 0.625, written .625.
  3. Games behind: ((50 − 45) + (35 − 30)) ÷ 2 = (5 + 5) ÷ 2 = 5.

Result: The team wins 62.5% of its games, a .625 record, and the rival is 5 games behind.

Understanding the result

.500 means as many wins as losses. Above .600 is usually a strong team in a long season, while .400 or lower usually means a losing year.

Games behind and winning percentage can disagree when teams have played different numbers of games. The team with the higher percentage is ahead in most standings even if games behind says otherwise.

Assumptions and limitations

  • Every game ends as a win, loss or tie for the team in question.
  • Games behind uses wins and losses only, as standings usually do.
  • Some leagues rank by points rather than winning percentage, for example with extra points for overtime losses or three points for a win. Those systems are not modeled here.
  • Tiebreakers such as head-to-head records are outside the scope of this calculator.

Frequently asked questions

How do ties affect winning percentage?

It depends on the league. Counting a tie as half a win and half a loss is the most common rule. A 10–5–2 record is .647 under that rule, .588 if ties count as losses, and .667 if ties are ignored.

What does half a game behind mean?

The two teams have played a different number of games. If the trailing team wins its extra game, the teams are level. If it loses, it falls a full game back.

Is a winning percentage really a percentage?

Standings write it as a decimal such as .625, which is the same as 62.5%. The calculator shows both forms.

Can games behind be negative?

Yes, in this calculator a negative value means the second team is ahead of the first. Published standings list the leader with a dash and every other team as positive games behind.

How this calculator is checked

Method: Standard winning-percentage definitions with common tie conventions; games behind as half the sum of the win and loss differences. The calculation is covered by automated tests with known reference values and edge cases. Last updated 2026-10-18. Found a problem? Tell us.

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