Closing Line Value Sports Calculator
See if you're beating the closing line over time.
How to Use This Calculator
- Enter the odds you took when you placed the bet
- Enter the closing odds (the final odds right before the event kicked off)
- Add your stake amount
- Check out your CLV percentage, edge, and expected profit
Formula
CLV % = (Your Odds / Closing Odds - 1) x 100
Edge = Closing Probability x (Your Odds - 1) - (1 - Closing Probability)
Expected Profit = Edge x Stake
Where Closing Probability = 1 / Closing Decimal Odds
Frequently Asked Questions
What does closing line value (CLV) mean?
Closing line value tells you whether the odds you grabbed beat the final (closing) odds before an event begins. The closing line is seen as the sharpest price because it bakes in all the available information, so regularly beating it is the strongest sign you’ll be profitable over the long haul.
Why does CLV matter so much?
CLV is the number one predictor of long-term betting success. Studies show bettors who keep getting positive CLV come out ahead over time, even when individual bets bounce around. It’s a measure of skill, not luck.
What counts as a good CLV percentage?
Any steady positive CLV means you’ve got an edge. Even +1-2% CLV kept up across plenty of bets points to sharp betting. Pros usually run at around 2-5% average CLV on their bets.
How can I keep track of my CLV?
Jot down the odds you take on each bet, then check the closing odds just before the event starts. Use this calculator to find the gap. Follow your average CLV across hundreds of bets to get a meaningful read.