Closing Line Value Calculator

Track your closing line value (CLV) to measure long-term betting edge.

Enter your bet odds and the closing odds. CLV measures if you consistently beat the closing line, indicating a long-term edge.
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If you know the vig/overround of the closing line, enter it here to calculate no-vig CLV. Leave at 0 to skip.

CLV Summary

Individual Bets

How it works: CLV % = (Closing Implied Prob / Your Implied Prob - 1) x 100. Equivalently: (Your Odds / Closing Odds - 1) x 100. Positive CLV means you got better odds than the closing line. Consistent positive CLV is the strongest indicator of long-term profitability. No-vig CLV adjusts the closing line by removing the bookmaker margin.