Closing Line Value Betting Calculator
Your price versus the closing line.
How to Use This Calculator
- Input the odds you secured at the moment of placing the bet
- Input the closing odds (the final price before the event began)
- Input your stake amount
- Read off your CLV percentage, edge, and expected profit
Formula
CLV % = (Your Odds / Closing Odds - 1) x 100
Edge = Closing Probability x (Your Odds - 1) - (1 - Closing Probability)
Expected Profit = Edge x Stake
Where Closing Probability = 1 / Closing Decimal Odds
Frequently Asked Questions
Define closing line value (CLV).
Closing line value gauges whether you obtained better odds than the final (closing) price before an event begins. The closing line is regarded as the most efficient price since it folds in all available information. Beating it consistently is the strongest signal of long-term betting profitability.
Why does CLV matter?
CLV is the single strongest predictor of long-term betting success. Studies indicate bettors who reliably post positive CLV turn a profit over time, even when individual results fluctuate. It quantifies skill rather than luck.
What counts as a good CLV percentage?
Any consistently positive CLV signals an edge. Even +1-2% CLV maintained across many bets points to sharp ability. Professional bettors generally run 2-5% average CLV across their wagers.
How is CLV tracked?
Log the odds you take on each bet, then capture the closing odds just before the event starts. Use this calculator to quantify the gap. Track your average CLV over hundreds of bets to build a meaningful sample.