Closing Line Value Calc
Beat the closing line? CLV is the truest edge signal.
How to Use This Calculator
- Enter the odds you locked in when you placed the bet
- Enter the closing odds — the final price right before kickoff
- Enter your stake
- See your CLV percentage, your edge, and the 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
What is closing line value (CLV)?
Closing line value tells you whether you beat the final price before an event kicks off. The closing line is treated as the sharpest number on the board because it bakes in every scrap of available information. Beating it consistently is the clearest sign of long-term profitability there is.
Why does CLV matter so much?
CLV is the single strongest predictor of long-term betting success. The research is clear: bettors who keep posting positive CLV win over time, even when individual results bounce around. It measures skill, not luck.
What counts as a good CLV percentage?
Any steady positive CLV signals a real edge. Even +1-2% held over a big sample points to genuinely sharp betting. The pros generally run 2-5% average CLV across their wagers.
How should I track my CLV?
Log the odds you grab on every bet, then note the closing price just before the event starts. Drop both into this calculator to measure the gap. Watch your average CLV across hundreds of bets — that’s where it gets meaningful.