Closing Line Value Calculator
Enter the odds you took and the closing odds to see how your price compares.
- You paid for a chance of
- 47.62%
- The close, no vig
- 50.00%
- Closing line value
- +2.38 points
- Your price
- +110
- Closing price
- −105
- Expected value if the close was right
- +5.00% of stake
Closing line value measures price, not luck: consistently beating the close is the best-known sign of a real edge, and a single bet proves nothing.
Educational tool. Bandwagon does not take or place wagers. Results are arithmetic on the numbers you enter, not advice.
How the closing Line Value Calculator works
The closing line is the last price before the event, and the market's most informed one. Closing line value measures how your price compares: price improvement = your decimal odds ÷ closing decimal odds − 1, and CLV in probability points = the closing probability − the probability your price implied.
The closing probability is better measured without the margin. Enter the other side's closing odds and the calculator removes the vig from the close; the expected value of your bet if the close was right is then (fair close probability × your decimal odds) − 1.
Consistently beating the close is the most-cited sign of a real edge, because the close is hard to beat. One bet proves nothing: variance dominates a single result.
Closing Line Value Calculator example
You enter
- Odds format
- American (−110)
- Odds you took
- +110
- Closing odds, same side
- -105
- Closing odds, other side
- -105
You get
- You paid for a chance of
- 47.62%
- The close, no vig
- 50.00%
- Closing line value
- +2.38 points
- Your price
- +110
- Closing price
- −105
- Expected value if the close was right
- +5.00% of stake
Taking +110 when the market closed at −105 / −105 is a price improvement of about 7.6%. The no-vig close is 50.00%, you paid for 47.62%, so the CLV is +2.38 points and the expected value at the close is +5.00% of the stake.
Closing Line Value Calculator questions
What is closing line value?
The difference between the price you got and the closing price, usually expressed as extra probability or extra payout.
Is positive CLV the same as profit?
No. It indicates a better price over time; results on individual bets are still luck.
Why use the no-vig close?
Without it the close includes the book's margin, which understates the real closing probability for both sides.
Can I use CLV for any sport?
Yes. It compares prices, so it works anywhere there is a closing price.
Related calculators
Expected Value Calculator
The average result of a bet if your win probability is right, and the edge over the price.
Vig Calculator
The juice on a market, and the fair no-vig odds for each side.
Implied Probability Calculator
The win chance a price implies, with the sportsbook's margin taken out.