How this tool works
A free bet calculator answers the offer-page question: how much is this token actually worth after the stake is withheld.
Free bet profit
Standard free bets do not return the stake. Profit = stake × (decimal odds − 1).
Accepts fractional (5/2), decimal (3.50) and American (+250 / -110) odds.
Why free-bet value is lower than the headline
A £10 free bet at 3.00 pays £20 profit, not £30, because the token is not refunded. That is why matched bettors often extract 70–80% of the face value. Pair this page with the matched betting calculator if you plan to lay the free bet off.
FAQ
Do all free bets withhold the stake?
Most UK sign-up tokens do. A few profit-boost or extra-places offers work differently, so read the terms.
What odds should I use?
Higher odds increase the cash returned from a free bet, but they are harder to land if you are betting to win rather than extracting value.
Is this the same as a bonus bet calculator?
Yes. US bonus bets use the same stake-not-returned rule.
Related betting tools
Important note
These calculators are for information only. Bookmaker rules, Rule 4, dead heats, each-way terms, maximum payouts and promotion conditions can change the real return. 18+ only. Please gamble responsibly.