Free tool

CLV Betting Calculator

Compare the odds you took with the closing line and measure the price difference in a consistent way.

CLV compares the odds you took with the closing line. Track it across comparable bets to explore how your prices measure up against the final market.

Direct answer

The CLV betting calculator turns two decimal odds into a simple read: you beat, matched, or fell behind the closing line. Use the result to evaluate process, price, and consistency, never to judge a single bet as right or wrong based only on the scoreline.

Calculator

Calculate the Closing Line Value

Automatic results

Fill in the odds you took and the closing odds to see CLV, implied probability, and interpretation. You can type 2.10 or 2,10.

Formulas used

CLV (%) = (Bet odds ÷ Closing odds − 1) × 100Implied probability = 1 ÷ decimal oddsDifference in p.p. = Implied probability of the closing line − Implied probability of the odds takenEstimated value = Stake × (Odds taken ÷ Closing odds − 1)

The main formula shows how much better or worse your odds were compared to the closing line. The difference in probability helps you understand the price movement. If the closing odds include bookmaker margin, the result is an approximation; when possible, use a vig-free/no-vig closing line.

Example in football

You took Over 2.5 goals in a Brasileirão match at 2.10. Before the match started, the closing line settled at 1.95. 

CLV = (2.10 ÷ 1.95 − 1) × 100 = +7.69% Implied probability of the entry = 1 ÷ 2.10 = 47.62% Implied probability of the closing line = 1 ÷ 1.95 = 51.28% Difference = +3.66 p.p.

You beat the closing line. Even if this specific bet loses, the price you took was better than the market's final price. Repeating this kind of decision with a methodical approach can be a good sign of process.

How to use the calculator

  1. Note the odds you took at the time of the entry.
  2. Then check the closing odds shortly before the match starts.
  3. Enter both odds in the calculator.
  4. See whether the CLV is positive, neutral, or negative.
  5. Evaluate the pattern across multiple bets, not a single bet in isolation.

How to interpret CLV over the long run

  • Recurring positive CLV indicates that you tend to get better prices than the closing line.
  • Recurring negative CLV may indicate late entry or accepting poor odds.
  • A bet with positive CLV can still lose.
  • A bet with negative CLV can still win.
  • What matters is looking at average, volume, sample, and consistency.

CLV vs EV

MetricWhat it measuresBest useCommon mistake
EVMeasures whether the odds have value according to an estimated probability.Compare the initial price with the closing price.Reading EV without checking the probability estimate.
CLVMeasures whether the odds you took were better than the closing line.After the bet, to evaluate the quality of the price.Assessing CLV from one match result.

Common mistakes

Evaluating a price using one result.

Measuring CLV from a single bet and drawing a quick conclusion.

Using a closing line with heavy margin and treating it as a perfect fair price.

Comparing different markets as if they were the same bet.

Ignoring that odds change quickly before the match.

Want to compare this calculation with real football odds?

Predora.si organizes Chance, EV, and best odds by market for independent comparison between estimate and price.

Explore Predora.si

FAQ about the CLV betting calculator

What is CLV in betting?

CLV, or Closing Line Value, compares the odds you took with the closing line of the same market. It measures price and process, not the outcome of a single game.

How do you calculate CLV with decimal odds?

Use CLV (%) = (odds taken divided by closing odds minus 1) times 100. If you took 2.10 and the closing line was 1.95, the CLV is positive.

What does positive CLV tell me?

You obtained better odds than the closing line. Track CLV across comparable bets to evaluate how your pricing process measures up against the final market.

Which closing line should I use?

The closing line is the final price observed before the match starts; different references can produce different CLVs.

What's the difference between CLV and EV?

EV uses an estimated probability to assess value before the bet. CLV compares your odds with the closing line afterward, to assess whether you beat the market's final price.