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Closing Line Value (CLV) Calculator
Measure your betting skill by comparing the odds you bet to the closing line.
Closing Line Value
+1.11%
You beat the closing line!
Your Bet
-110
52.38% implied
Closing Line
-115
53.49% implied
What is Closing Line Value?
Closing Line Value (CLV) measures whether you're getting better odds than the final market price. The closing line is considered the most efficient because it incorporates all available information right before the event starts.
Professional bettors track CLV as the primary indicator of long-term success. Consistently beating the closing line suggests you have an edge over the market, even if short-term results vary due to variance.
Master CLV Tracking
Closing Line Value: Complete Guide
Learn why CLV is the ultimate metric for betting skill and how to track it effectively.
How to Find +EV Bets
Use CLV tracking alongside other methods to identify profitable betting opportunities.
Reverse Line Movement Guide
Understand why lines move and how sharp money creates CLV opportunities.
This calculator is for informational and educational purposes only. Results should be verified with your sportsbook before placing any wagers. All betting carries risk. Full Disclaimer
Frequently Asked Questions
What is closing line value (CLV)?
CLV measures whether you beat the final market price. If you bet a team at -2.5 and it closes -3.5, you captured a point of CLV. Consistently beating the close is the strongest statistical predictor of long-term betting profit.
How do I calculate my CLV?
Compare the no-vig implied probability of your bet price against the no-vig closing price. Betting +150 (40%) on a line that closes +120 (45.5%) is +5.5% CLV. Track it across all bets to measure your true edge.
Can I be profitable without positive CLV?
It's very difficult in efficient markets. Short-term profits with negative CLV are usually variance. In softer markets (small-college lines, obscure props), edges can exist that the closing line never fully reflects, but positive CLV remains the best health check.
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Responsible Gambling
Gambling should be entertaining, not a way to make money. Only bet what you can afford to lose, and never chase your losses.
- Betting more than you can afford to lose
- Chasing losses with bigger bets
- Lying to others about gambling habits