# Closing Line Value Calculator

Effortlessly Calculate Closing Line Value (CLV) for Both US and Decimal Odds

## What is clv in betting?

Closing Line Value (CLV) in betting is a measure used by sports bettors to assess the value of the odds they’ve wagered on compared to the odds at the time the event starts, known as the closing odds. It’s a way to evaluate the skill in bet selection. A positive CLV indicates that a bettor got better odds than those available at the game’s start, suggesting a higher value bet. In essence, consistently beating the closing odds can be a sign of long-term betting success and skill.

## Instructions on how to use CLV Calculator

### #1 Closing Line Value Calculator: Two Way (decimal odds)

Example 1: Baseball Betting (Red Sox vs. Yankees)

• Taken Odds: You bet on the Red Sox at 2.06.
• Closing Odds: At game time, the odds were 1.95 for the Red Sox and 1.93 for the Yankees.
• Calculation: The script first calculates the bookmaker’s margin from the closing odds. It then computes the fair closing odds for both teams, considering this margin. Finally, the CLV is calculated as the percentage difference between your taken odds and the fair closing odds for the Red Sox.

Example 2: Basketball Betting (Lakers vs. Celtics)

• Taken Odds: You bet on the Lakers at +7 with odds of 1.95.
• Closing Odds: When the game starts, the odds are 1.80 for the Lakers at +7 and 2.1 for the Celtics at -7.
• Calculation: Similarly, the margin is derived from the closing odds. The script calculates fair closing odds for the Lakers and Celtics. The CLV is then determined by comparing your taken odds for the Lakers to their fair closing odds.

### #2 Closing Line Value Calculator: Three Way (decimal odds)

Example: Soccer Betting (Real Madrid vs. Barcelona)

• Taken Odds: You bet on Real Madrid with odds of 2.20.
• Closing Odds: At game time, the odds were 1.99 for Real Madrid, 3.66 for a draw, and 3.78 for Barcelona.
• Calculation: The script first calculates the bookmaker’s margin using the closing odds for all three outcomes. It then determines the fair closing odds for Real Madrid, the draw, and Barcelona, taking this margin into account. Finally, the CLV is calculated by comparing your taken odds for Real Madrid to their fair closing odds. This process offers a comprehensive insight into the potential value of your bet in a three-way market scenario.

### #3 Closing Line Value Calculator: Two Way (US odds)

Example 1: Baseball Betting (Red Sox vs. Yankees)

• Taken Odds: You bet on the Red Sox at US odds of -135.
• Closing Odds: At game time, the odds were -150 for the Red Sox and +130 for the Yankees.
• Calculation: The script first converts these US odds to decimal odds. Then, it calculates the bookmaker’s margin from the closing odds. Next, it computes the fair closing odds for both teams, considering this margin. Finally, the CLV is calculated as the difference between your taken odds (in decimal form) and the fair closing odds for the Red Sox.

Example 2: Basketball Betting (Lakers vs. Celtics)

• Taken Odds: You bet on the Lakers at +7 with US odds of -120.
• Closing Odds: When the game starts, the odds are -150 for the Lakers at +7 and +130 for the Celtics at -7.
• Calculation: After converting the US odds to decimal, the script calculates the margin from the closing odds. It then determines the fair closing odds for the Lakers and Celtics. The CLV is calculated by comparing your taken odds (converted to decimal) for the Lakers to their fair closing odds.

### #4 Closing Line Value Calculator: Three Way (US odds)

Example: Soccer Betting (Real Madrid vs. Barcelona)

• Taken Odds: You bet on Real Madrid with US odds of +120.
• Closing Odds: At game time, the odds were -110 for Real Madrid, +265 for a draw, and +278 for Barcelona.
• Calculation: The script converts these US odds to decimal odds. Then, it calculates the bookmaker’s margin using the closing odds for all three outcomes. Next, it determines the fair closing odds for Real Madrid, the draw, and Barcelona, considering this margin. Finally, the CLV is calculated by comparing your taken odds (converted to decimal) for Real Madrid to their fair closing odds, offering insight into the value of your bet in a three-way market.

## Conclusion

Closing Line Value (CLV) is a crucial concept in sports betting, providing insight into the value and timing of bets compared to the closing odds. Mastering the understanding and application of CLV can significantly enhance a bettor’s strategy, leading to more informed and potentially profitable betting decisions. It’s not just about the bets you win, but also about how your odds compare to the market’s final consensus.

### FAQs about Closing Line Value:

1. What is CLV in betting? CLV in betting measures how the odds you bet at compare to the odds when the event starts (closing odds). A positive CLV indicates a value bet.
2. Why is CLV important in sports betting? CLV is important as it reflects a bettor’s ability to find value in odds, which can be indicative of long-term profitability.
3. Where can I find closing lines for different sports? Closing lines for various sports can be found on platforms like OddsPortal, offering comprehensive odds history and comparison.
4. How can I track my bets’ CLV? You can track your bets’ CLV using a bet tracker. For instance, my free betting tracker spreadsheet is an excellent tool for this purpose.
5. Does a positive CLV guarantee winning bets? While a positive CLV indicates value, it doesn’t guarantee winning bets. It’s more about the quality of the odds you’re getting over time.
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