VigFree Analytics | Closing Line Value CalculatorMeasure how much value you captured vs closing odds
Closing Line Value (CLV) is one of the most important metrics for evaluating sports betting performance. It measures the difference between the odds you bet at and the closing odds (the final odds before an event starts). CLV is a strong predictor of long-term profitability. Consistently beating the closing line is a hallmark of sharp, winning bettors. Even if a bet loses, positive CLV indicates you got value relative to the market's final assessment.
For example, if you bet Team A at +150 and the closing odds are +130, you captured positive CLV because you got better odds than the market's closing price. The closing line is considered the most efficient odds because it reflects all available information and betting volume. Studies show that bettors with consistent positive CLV are profitable over time, even with win rates below 50% in some cases.
This calculator helps you track CLV by comparing your bet odds to the closing odds. Enter both sets of odds (American or decimal format) to see your CLV percentage and whether you beat the closing line. Use this tool to evaluate your betting decisions and identify whether you're consistently finding value before the market corrects itself.
Measure how much line value you captured by comparing the odds at which you placed a bet to the closing odds. Positive CLV suggests you bet at a favorable price relative to market close. Select the odds format and enter both prices. Learn how CLV is measured