Free bet calculator (bonus bet converter)
A free bet, which most US sportsbooks now call a bonus bet, pays out your winnings but not the stake. Hedging it on the other side at a second book turns it into cash whoever wins. This calculator sizes that hedge and shows how much of the free bet you keep, known as the conversion rate.
Because the stake never comes back, free bets convert best at longer odds. An even-money free bet hedged at even money keeps 50%. The same $100 at +300, hedged at -350, keeps 66.7%.
Winnings only — free bet stake is not returned
Free, no account needed. Everything is worked out in your browser and nothing you type is saved.
How to use the free bet calculator
- 1Enter the free bet odds in the Free Bet column and the price on the other side at your hedge book in the Hedge column.
- 2Enter one token’s usable amount as the Free Bet stake. The hedge fills in automatically. Entering a hedge-balance limit calculates a different bonus stake: use it only if the token permits that amount. A single-use token may forfeit any unused remainder.
- 3If either bet has a profit boost, enter the boost percentage in the Boost row. It raises the winnings, not the stake.
- 4Place both bets. Total Profit is what you keep either way, and Conversion % is that profit as a share of the free bet.
Worked example: a $100 free bet at +300
You have a $100 free bet. You place it at +300 and hedge the other side at -350 at a second sportsbook.
- Free bet winnings (stake not returned)
- $300.00
- Hedge stake at -350
- $233.33
- Hedge payout if it wins
- $300.00
- Profit either way
- $66.67
- Conversion rate
- 66.7%
If the free bet wins you collect $300.00 and lose the $233.33 hedge, leaving $66.67. If the hedge wins it returns $300.00 on $233.33 staked, also $66.67. The $100 free bet became $66.67 in cash.
Frequently asked questions
What is a good free bet conversion rate?
Both prices matter: +100 hedged at -100 converts at 50%, while +140 hedged at -160 converts at about 53.85%. Compare eligible pairs within your token’s odds cap, expiry and funded hedge balance. There is no universal floor: waiting for a better rate can leave an expiring token unused.
Why do free bets convert better at long odds?
The stake is never returned, so the only value is in the winnings. A $100 free bet at -200 wins $50 at most, so it cannot convert above 50%. At +300 it wins $300, and hedged at -350 it converts at 66.7%.
Where should I place the hedge?
For this method, use a second sportsbook with enough cash for the hedge and matching market-settlement rules. Compare eligible prices there before placing the bonus bet. A better hedge price raises the conversion, but both books’ terms and the token’s restrictions still apply.
Is a bonus bet the same as a free bet?
Yes. US sportsbooks mostly say bonus bet now, but the mechanics are the same: the winnings are paid and the stake is not. Offers such as a second chance bet also pay out as bonus bets, which you then convert here.
What does the Boost row do?
It applies a profit boost to that leg. A 50% boost on +300 raises the winnings by half, to +450. Leave it at 0 for a plain free bet.
Related tools and guides
- How to convert bonus bets into cash
The conversion math, a complete example, and the offer terms to check.
- Use BreadSync’s Free Bet view
Find a pair, apply an odds cap, size the hedge and log both bets.
- How sportsbook bonus bets work
Understand tokens, expiry, odds caps and conversion rates.
Free now, free for good
Every BreadSync calculator is free to use without an account, and that is not changing. They work on the odds you type in.
The best hedge for a free bet means checking every book on the other side. BreadSync Pro does that across 130+ sportsbooks and ranks the conversions for the book your free bet is at.
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21+. Worked examples are illustrative and use made-up prices; real odds change constantly. Calculator results are estimates for information only, not betting advice or a guarantee of profit. BreadSync is not a sportsbook and does not accept wagers. If gambling stops being fun, call 1-800-GAMBLER.