Closing Line Value (CLV) calculator
Measure your edge against closing odds — the sharps' KPI
Compare the odds you bet at to the closing odds — the single best leading indicator of long-term profitability.
What is CLV?
Closing Line Value (CLV) measures whether you bet at better odds than the market's final price. If you backed something at 2.20 and it closed at 2.00, your CLV is +10% — meaning you found a +10% edge that the market eventually agreed with. CLV is the holy grail metric because it's not noisy like ROI: even a tiny CLV edge predicts long-term profitability with high confidence. Sharp bettors track every bet's CLV. Combine with No-vig fair odds to remove the bookie margin from your closing price for the cleanest measurement, and Value Bet finder for pre-bet edge estimation.
See also: Value bet finder, No-vig (fair odds), ROI tracker
How to use
- 1Enter the odds you took when placing the bet.
- 2Enter the closing odds at the same bookmaker.
- 3See your CLV in % and the implied edge.
Example: backed Liverpool at 2.10, closed at 1.85
Bet odds: 2.10. Closing odds: 1.85. CLV = (2.10 / 1.85) − 1 = +13.5%. That's a strong CLV — over hundreds of bets at this level, you should be solidly profitable regardless of individual bet outcomes. A bettor with positive CLV who loses 5 in a row is statistically unlucky, not bad.
When to use
- Track CLV on every bet — the only metric that matters long-term
- Verify if a tipster has real edge or is just lucky
- Compare your edge across sports and markets
Frequently asked questions
What is the Closing Line Value calculator?
Closing Line Value (CLV) measures whether you bet at better odds than the market's final price. If you backed something at 2.20 and it closed at 2.00, your CLV is +10% — meaning you found a +10% edge that the market eventually agreed with.
How does the Closing Line Value calculator work in practice?
Bet odds: 2.10. Closing odds: 1.85. CLV = (2.10 / 1.85) − 1 = +13.5%. That's a strong CLV — over hundreds of bets at this level, you should be solidly profitable regardless of individual bet outcomes. A bettor with positive CLV who loses 5 in a row is statistically unlucky, not bad.
When should I use the Closing Line Value calculator?
Track CLV on every bet — the only metric that matters long-term. Verify if a tipster has real edge or is just lucky. Compare your edge across sports and markets.