Free calculator
Closing Line Value Calculator
You beat the close. Do this consistently and profit follows, whatever any individual result says.
How to use it
Change any input and the results update immediately. The values are also written into the address bar, so you can bookmark a calculation or paste the link to someone else and they will see exactly the same numbers.
Everything here computes with the same functions that produce the grades inside WeBall, so a number on this page will never contradict a number on a bet card.
What the term means
Whether the price you got was better than the price the market settled at by game time.
The closing line is the sharpest number a market ever produces. By kickoff it contains every injury report, every weather update and every dollar of informed money. Beating it consistently is the strongest available evidence that your process has an edge.
Full definition of closing line value →
Learn the math behind it
A calculator is faster than doing this by hand, but knowing why the formula works is what lets you spot when a number is wrong. Read the full guide →