Calculate Closing Line Value
Benchmark your price against the close — the truest edge signal.
How to Use This Calculator
- Enter the odds you locked in at the moment you placed your bet
- Enter the closing odds — the final price right before kickoff
- Set your stake amount
- Instantly see your CLV percentage, your 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
What is closing line value (CLV)?
Closing line value tells you whether you beat the final (closing) price before an event kicks off. That closing line is treated as the sharpest price around because it bakes in every bit of available info. Beating it again and again is the clearest sign of long-term profitability.
Why does CLV matter so much?
CLV is the single strongest predictor of long-term success. The research is clear: bettors who keep landing positive CLV come out ahead over time, even when individual results bounce around. It’s a measure of skill, not luck.
What counts as a good CLV percentage?
Any steady positive CLV signals an edge. Even +1-2% held over a big run of bets points to sharp instincts. Pros usually run 2-5% average CLV across their action.
How should I track my CLV?
Log the odds you grab on every bet, then check the closing price just before the event starts. Run the difference through this calculator. Watch your average CLV across hundreds of bets to get a sample that actually means something.