Free calculator
Free Bet Conversion Calculator
Free bets convert better at longer odds, because you keep a larger share of a payout you were never staking against. Using one on a heavy favourite throws most of its value away.
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
A promotional wager that pays only the profit, not the stake, if it wins.
A $100 free bet at +200 returns $200, not $300 — the stake is not yours and does not come back. This makes a free bet worth substantially less than its face value in cash.
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 →