Closing Line Value (CLV) calculator
Did you beat the close? Find out in one number.
Closing Line Value
+10%
You beat the close 👍
Enter both prices in American odds. Positive CLV means you got a better number than the closing line — the clearest sign of a long-term edge.
What is Closing Line Value?
Closing Line Value (CLV) compares the price you got to the closing line — the final odds right before the event starts. Because the closing line is the market’s sharpest estimate, consistently getting a better number than the close is the strongest predictor that you’re a long-term winner.
Positive CLV means you beat the close; negative means you were behind it. One bet doesn’t prove much — it’s your CLV over time that matters. Bankroll Guardian captures the closing line and grades your CLV automatically on every bet, so you never have to do this by hand.
Track every bet automatically
Stop doing the math by hand. Bankroll Guardian logs your bets and shows P&L, ROI, CLV and more — free to start, no card required.