Enter the odds you took and the closing line. The calculator returns your CLV in cents, the implied-probability delta, and a verdict on whether you beat the close.
For every bet you place, record two prices: the odds at the moment you bet (your taken price) and the final closing line at the same sportsbook. The gap between them is your closing line value. Positive CLV means the market moved toward your side after you bet — the strongest available signal of long-run betting edge.
Reading the result: CLV in cents tells you how many price points you beat the closing market by. The implied-probability delta converts that to a probability-points gain — the more directly comparable number across different price ranges. A CLV of +15 cents on a +135 bet that closed at +120 means the market eventually agreed your bet was worth about 2.9 implied probability points (42.6% to 45.5%) more than the price you paid.
The deeper explanation: why CLV is the only sports betting stat that actually predicts long-run ROI →
Closing line value compares the price you took with the price at the close, on your side of the bet. Positive means the market moved toward your side after you bet.
| You took | It closed | Implied % taken | Implied % close | Implied-probability gain | Cents | Verdict |
|---|---|---|---|---|---|---|
| +135 | +120 | 42.6% | 45.5% | +2.9 pp | +15 | Beat the close |
| −110 | −125 | 52.4% | 55.6% | +3.2 pp | +15 | Beat the close |
| −110 | −105 | 52.4% | 51.2% | −1.2 pp | −5 | Lost to the close |
| +150 | +165 | 40.0% | 37.7% | −2.3 pp | −15 | Lost to the close |
| +105 | −105 | 48.8% | 51.2% | +2.4 pp | +10 | Beat the close |
Example: +135 is 42.6% implied and +120 is 45.5%, so the gain is +2.9 percentage points and the cents figure is +15. The probability gain is the better number to compare across different price ranges.
CLV is the difference between the price you bet and the final price before the game starts. Beating the close means the market later agreed your side was a better bet than the price you took.
Convert both prices to implied probability and subtract your price's probability from the closing price's. Above zero is positive CLV. The cents figure compares the two American prices on the dime-line scale.
No. CLV is about price, not results. You can beat the close and lose the bet, and win while losing CLV. Over hundreds of bets, average CLV is a steadier signal of skill than win rate.
To judge your own bet-timing, use the close at the same book. To judge whether you beat the market, use a sharp or consensus close. State which one you used when you compare results.
Yes, but the number matters as well as the price. Taking −3 when it closes −4 is positive CLV even if the juice is the same, and the move is worth more when it crosses a key number such as 3 or 7 in football.
About 100 is the minimum for a useful read and 200 or more is better. Below 50 bets, single-price noise still dominates.