Win Loss Ratio Calculator
Calculate your win/loss ratio, win rate percentage, and winning streak statistics for any competitive activity. Enter your total wins and losses to instantly see your performance metrics — whether you track sports records, trading results, sales conversions, or gaming stats.
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What is Win Loss Ratio?
The win/loss ratio divides total wins by total losses to produce a simple performance metric. A ratio of 2.0 means you win twice for every time you lose. The win rate percentage (wins ÷ total games × 100) provides an alternative view: a 2:1 ratio corresponds to a 66.7% win rate. Both metrics are widely used in sports, trading, gaming, sales, and any competitive endeavor to measure and track performance.
Understanding your win/loss ratio in context is essential. In sports, the ratio varies dramatically by competition level — a 3:1 ratio in recreational play may equal a 1:1 ratio in professional competition. In trading, the win/loss ratio must be evaluated alongside the average win size versus average loss size (risk-reward ratio). A 40% win rate can still be profitable if average wins are significantly larger than average losses.
적용 수학 공식 및 방정식
이 Win Loss Ratio Calculator는 5가지 핵심 수학 공식을 사용합니다:
1 Win Loss Ratio ▼
45 wins and 30 losses: W/L = 45/30 = 1.50:1.
2 Win Rate Percentage ▼
45 wins in 75 games: Win Rate = (45/75) × 100 = 60%.
3 Profit Factor (Trading) ▼
30 wins × $500 avg / 20 losses × $400 avg = $15,000/$8,000 = 1.875.
Explore all calculation options on the 비율 계산기 home page.
비율 계산기 사용법
이 비율 계산기는 아래의 3단계로 쉽게 사용할 수 있습니다:
수치 입력하기
입력 칸에 알고 있는 비율 값을 입력합니다. 구하려는 미지수 자리의 칸 하나는 비워둡니다.
모드 선택하기
비율 모드(풀기, 간소화, 스케일링)를 선택합니다. 각 모드는 입력한 수치에 맞춰 다른 공식들을 적용합니다.
결과 확인하기
계산하기 버튼을 누릅니다. 결과 화면에 정답과 함께 시각적인 비율 바, 원형 차트, 상세한 단계별 풀이 과정이 출력됩니다.
실제 예제 문제 및 단계별 풀이
비율 계산기를 활용하여 아래 3가지 예제 문제를 단계별로 해결하는 과정입니다:
입력 1 Team record: 42 wins, 28 losses
입력 2 Trading: 55 wins ($200 avg), 45 losses ($150 avg)
입력 3 Sales: 18 deals won, 32 lost, 10 pending
자주 묻는 질문 (FAQ)
How do I calculate my win/loss ratio? ▼
Win/Loss Ratio = Total Wins ÷ Total Losses. If you have 75 wins and 50 losses, your ratio is 1.50 (or 3:2). If you have 30 wins and 30 losses, your ratio is 1.0 (even record). A ratio above 1.0 means more wins than losses.
What is a good win/loss ratio? ▼
It depends entirely on context. In major league baseball, 60% (1.5:1) is excellent. In casual gaming, 60% might be average. In day trading, 50% with a 2:1 reward-to-risk ratio is profitable. In sales, close rates of 20-30% are typical for complex B2B sales. Compare to your specific domain's benchmarks.
What is the difference between win rate and win/loss ratio? ▼
Win rate = Wins ÷ Total Games × 100 (a percentage). Win/loss ratio = Wins ÷ Losses (a ratio). With 60 wins and 40 losses: win rate = 60%, win/loss ratio = 1.5. Win rate accounts for total games; ratio only compares wins to losses directly.
How many games do I need for a reliable win rate? ▼
At least 30-50 outcomes for basic reliability, 100+ for moderate confidence, and 200+ for high statistical significance. With fewer than 30 games, a few lucky or unlucky results heavily skew the percentage. The larger the sample, the more stable and reliable the win rate becomes.
Can my win/loss ratio be negative? ▼
No. Wins and losses are non-negative numbers, so the ratio is always 0 or positive. A ratio of 0 means zero wins (0/N = 0). With zero losses, the ratio is technically undefined (division by zero) — most systems display it as the number of wins or infinity.
How do I account for ties in my win rate? ▼
Three common approaches: (1) Exclude ties and calculate only from decisive results. (2) Count each tie as 0.5 wins and 0.5 losses. (3) Use a points system (win=2, tie=1, loss=0). The method depends on your sport/activity's conventions. Specify which method you use for consistency.
What win rate do I need to break even in trading? ▼
It depends on your reward-to-risk ratio. With 1:1 risk-reward, you need 50% win rate to break even. With 2:1 (average win is twice average loss), you only need 33.3%. With 3:1, you need 25%. The formula: Break-even win rate = 1 ÷ (1 + Reward/Risk ratio).
How does win rate differ across sports? ▼
NBA: league average is 50% (41-41), elite teams reach 73% (60-22). NFL: 50% average, elite 75% (12-4). MLB: 50% average, elite 60% (97-65). Tennis grand slam champions often have 80%+ career win rates. Chess grandmasters typically maintain 60-70% against all rated opponents.
Should I track win rate by opponent or overall? ▼
Both. Overall win rate gives the big picture, but opponent-specific rates reveal matchup advantages and weaknesses. In sports, you might dominate weaker opponents (85%) but struggle against top teams (35%). This detail is hidden in the overall average (60%).
How do professional traders evaluate win/loss ratios? ▼
Professional traders evaluate win rate alongside average win size (R-multiple). The profit factor = (Win Rate × Avg Win) ÷ (Loss Rate × Avg Loss). A profit factor above 1.0 is profitable. Many successful traders have 40-50% win rates but average wins that are 2-3× larger than average losses.
What is the Kelly Criterion and how does it relate to win rate? ▼
The Kelly Criterion calculates the optimal position size based on your win rate and payoff ratio: Kelly % = Win Rate − (Loss Rate ÷ Payoff Ratio). With 55% win rate and 1.5:1 payoff: Kelly = 0.55 − (0.45/1.5) = 0.25 (bet 25% of bankroll). It maximizes long-term growth rate but requires accurate win rate data.