What CLV is
Closing line value compares your odds with the odds just before the game starts. Bet -105 on a side that closes at -125 and you beat the close, win or lose.
Closing line value (CLV) calculator
Enter the odds you took and the closing odds. See your closing line value, and add the other side's closing price to remove the margin and see your expected ROI.
Closing line value+8.5%
Your odds-105 (51.2%)
Closing odds-125 (55.6%)
VerdictBeat the close
One bet tells you little either way. Beating the closing line on most of your bets over hundreds of plays is one of the best early signs of a real edge.
For information only. Results use the odds you enter and don't include any sportsbook rules or limits.
How it works
CLV calculator: the basics
Why it matters
Results take thousands of bets to prove much. Beating the closing line on most bets is a much earlier sign that you have a real edge.
Removing the margin
The closing price includes the sportsbook's margin. Add the other side's closing odds to get the fair price and see your expected return on the bet.
Tracking it over time
Log your odds and the closing odds for every bet. Average CLV over hundreds of bets says far more about your skill than a hot or cold month.
Related guides: What is closing line value (CLV)?
Terms used here: Closing line value · Closing line · Fair odds · Full glossary
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FAQ
CLV calculator questions
How do I calculate closing line value?
Divide your decimal odds by the closing decimal odds and subtract 1. -105 (1.952) against a -125 close (1.800) is +8.4% CLV.
What is a good CLV?
Any consistently positive CLV is good. Beating the close by 2% to 3% on average over hundreds of bets is a strong sign of an edge.
Can I have positive CLV and still lose?
Yes. CLV measures the price you got, not the result. Over enough bets positive CLV should lead to a profit, but variance means any month can go either way.