Betting
Closing Line Value Calculator
Compare taken decimal odds with a closing price, calculate price-based closing line value and see the difference in implied probability.
Your result
5.00%
Price-based closing line value
- Taken implied chance
- 47.61904762%
- Closing implied chance
- 50.00%
- Closing minus taken chance
- 2.38095238%
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CLV = taken decimal / closing decimal − 1; quoted closing price is not a probability forecast.
Price-based closing line value formula
Using taken odds Dₜ and closing odds D꜀, the return-based comparison is Dₜ / D꜀ − 1. Taking 2.10 before a 2.00 close gives 5% by this definition. Other reports use an implied-probability difference or remove margin first, so state the definition when comparing results.
Implied chance falls as decimal odds rise. The tool also reports 1/Dₜ and 1/D꜀. A closing price is a market observation, not verified outcome probability. Use the no-vig calculator if you have a complete closing market and want a normalized reference.
Compare the same selection and settlement
Both prices must refer to the same outcome, handicap, settlement and currency assumptions. A different point spread is a different bet. No live odds or performance record is inferred from two entered prices.