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Closing line value (CLV) calculator

Enter the price you took and the closing price to see your closing line value, the move in implied probability, and your expected value against the no vig close.

Your price and the close

Odds format
+7.56%CLV on price (your odds vs closing odds)
+3.60 ptsimplied probability move toward your side
+2.72%expected value at the no vig closing line

Positive CLV means you got a better price than the market settled on. Over many bets it is a sign of good timing or good judgment, but it doesn't change whether any one bet wins.

Calculations show hypothetical outcomes from the prices you enter. They do not predict results, and betting always involves risk.

Example

You bet +110; the line closed -105 on your side and -115 on the other. Price CLV is 7.56%. With the vig removed, your side closed at a 48.9% chance, so your +110 had an expected value of 2.72% against the close.

How it is calculated

  • Price CLV: your decimal odds / closing decimal odds minus 1.
  • Implied move: closing implied probability minus the implied probability of your price.
  • EV at the close: your decimal odds x the no vig closing chance minus 1.

Related guides

Common questions

What is closing line value?

The difference between the price you took and the last price before the event started. Taking +110 on a side that closes at -105 means you beat the closing line.

Why does CLV matter?

Closing prices include the most information, so consistently beating them is a sign your timing or judgment is good. It is measured over many bets, not one.

Why enter the other side's closing price?

To remove the vig from the close. Your expected value against the no vig closing line is a fairer measure than comparing prices alone.

Does positive CLV mean my bet will win?

No. It says you got a good price, not that the outcome will go your way.

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