Closing Line Value Calculator
Beating the closing line is the single best proof your bets are good — far more reliable than whether any one of them won. Enter the price you bet and where the line closed.
How it works
Odds are probabilities in disguise. We convert both prices to implied probabilities and compare. If the market closed thinking your side was more likely than the price you locked in implied, you got a better number than the close — positive CLV.
FAQ
What is CLV?
How your bet's price compares to the final pre-game price. Bet a better number than the close and you have positive closing line value.
Why does it matter more than winning?
One bet is mostly luck. Beating the close over many bets is almost impossible by chance, so it's the best evidence your edges are real — even mid-losing-streak.
What's no-vig CLV?
CLV measured against the fair, vig-stripped close. Add the other side's closing odds above and this tool computes it.