Free Bet Calculator 2026
Work out exactly what a free bet pays. Because the stake is not returned, a free bet wins less than a cash bet, and this shows you the real number on singles, accumulators and each-way, plus what the bet is actually worth.
Built and math-checked by Evgeniy Volkov
Free bet returns calculator
Stake not returned: this is your full profit from the free bet.
What this free bet is really worth
A free bet only pays if it wins. To lock in guaranteed cash, lay it off with our matched betting calculator.
Free bet winnings by odds
What a $50.00 free bet pays in winnings at common odds, SNR. The stake is never returned, so these figures are pure profit.
| Decimal odds | Fractional | Winnings |
|---|---|---|
| 1.5 | 1/2 | $25.00 |
| 2 | evens | $50.00 |
| 3 | 2/1 | $100.00 |
| 5 | 4/1 | $200.00 |
| 11 | 10/1 | $500.00 |
| 21 | 20/1 | $1,000.00 |
A free bet is not the same as free cash, and the difference trips up a lot of bettors. Almost every free bet is SNR, stake not returned, which means a winning free bet pays only the winnings and keeps the stake. So a $50 free bet at 3.0 gives you $100, not the $150 a $50 cash bet would. This calculator does that math instantly for singles, accumulators and each-way bets, and it goes one step further: it tells you what the free bet is actually worth, both if you simply place it and if you convert it to guaranteed cash. Free on ToolsGambling.com.
What this free bet calculator does
It takes your free bet amount and your odds and returns the exact winnings you collect if the bet wins, correctly accounting for the stake not being returned. It works for a straight single, for an accumulator where it multiplies every leg's odds together, and for an each-way bet where it splits the stake into a win part and a place part and applies your place terms. You can enter odds in decimal, fractional or American format, and it converts them for you. The result panel shows your winnings, the total return, and the combined decimal odds, so there is no ambiguity about what a free bet actually pays.
SNR: why a free bet pays less than cash
SNR stands for stake not returned, and it is the single most important thing to understand about free bets. When you place a normal cash bet, a win returns your stake plus your winnings. A free bet is the bookmaker's money, so when it wins you keep only the winnings, the stake vanishes. In practice that means the effective odds of a free bet are one lower than the sticker odds: a free bet at decimal 3.0 pays like a cash bet at 2.0. This is why low-odds free bets are poor value and why the calculator defaults to SNR. The rarer SR, or stake returned, free bet behaves like normal cash, and you can toggle it on if your offer is one of those.
Who it is for
It is for anyone who has claimed a bookmaker free bet or bonus bet and wants to know what it is actually worth before placing it. That includes new customers working through a welcome offer, regulars using reload free bets, and horse racing punters trying to size an each-way free bet correctly. It is also for anyone comparing offers: a $50 free bet and $50 cash are not the same, and this tool shows exactly how much less the free bet is worth. If you want to squeeze the most guaranteed value out of a free bet rather than gambling it, the tool points you to the matched betting route.
How to use it
Pick your bet type first: single, accumulator or each-way. Choose the odds format you have, decimal, fractional or American, and enter your free bet amount. For a single, type the odds. For an accumulator, add a leg for each selection and enter each one's odds, and the tool multiplies them into combined odds. For each-way, enter the win odds, choose the place terms your bookmaker offers, and select whether the selection won, placed or lost. Keep the SNR box ticked unless your offer specifically returns the stake. The winnings, total return and real-value figures update instantly as you type.
A worked example: a $50 free bet three ways
Take a $50 SNR free bet and see how much the odds matter. Placed on an even-money favourite at decimal 2.0, it returns just $50 in winnings, half of what $50 cash would yield, so the SNR penalty is brutal at low odds. Move it to 5.0 and it returns $200, and the vanished stake is now a small fraction of the payout. Put the same $50 into a three-leg accumulator at 2.0 each, combined odds 8.0, and a win returns $350. The lesson is consistent: a free bet is worth far more the higher you aim, which is exactly why sharp bettors never waste one on a short-priced single. Try each in the calculator above and watch the winnings jump.
What a free bet is really worth
A free bet only pays if the selection wins, so its face value is not its real value. There are two honest ways to measure it. If you simply place the free bet, its expected value at fair odds is your stake times the win probability times the winnings, which the tool shows as the expected figure. It is real but variance-heavy: most of the time a single free bet returns nothing. The second, steadier measure is what you can lock in by converting the free bet to guaranteed cash through matched betting, which is typically around 70 to 80 percent of the face value with no gambling risk at all.
Turning a free bet into guaranteed cash
The way to extract reliable value from a free bet is matched betting: you place the free bet on a selection at the bookmaker, then lay the same selection on a betting exchange so that every outcome is covered. Done right, you keep a fixed profit no matter what happens, usually 70 to 80 percent of the free bet's face value. That beats the coin-flip of just placing it, where you either win big or, far more often, get nothing. This calculator tells you the free bet's returns and its indicative matched value, and our matched betting calculator works out the exact lay stake and locked-in profit for your specific odds.
Odds formats and accumulators
The tool reads all three common odds formats. Decimal odds like 3.0 are the total return per unit including stake. Fractional odds like 2/1 are the winnings per unit staked, so 2/1 equals decimal 3.0. American odds like +200 show the profit on a 100 stake, and negative American like -150 shows the stake needed to win 100. For an accumulator, the combined odds are the product of every leg, so three legs at 2.0 give combined odds of 8.0 and a free bet return based on that. Because a free bet is SNR, a big accumulator free bet can pay a lot, which is why using it on higher odds is usually the smart play.
Each-way free bets and horse racing
Each-way is where free bets get fiddly, and it matters most in horse racing. An each-way bet is really two bets: half your stake on the selection to win, half on it to place, where place pays a fraction of the win odds, commonly a fifth or a quarter, over a set number of places. With a free bet, that split still applies, so a $20 each-way free bet stakes $10 to win and $10 to place. If the selection wins, both parts pay; if it only places, just the place part pays. Set the win odds, the place terms and the result in the tool to see exactly what an each-way free bet returns.
Types of free bet offers
Not all free bets are labelled the same way, and the wording changes what the offer is worth. A pure free bet or bonus bet is the SNR token this calculator is built for. A bet-and-get or risk-free offer usually gives you an SNR free bet after your first qualifying stake, so you model the free-bet part here and treat the qualifier separately. Acca insurance refunds your stake as a free bet if one leg of an accumulator lets you down, again SNR. A deposit match or a stake-returned bonus behaves more like cash, so untick the SNR box for those. Whatever the label, the number that matters is whether the stake comes back, and reading that one line tells you what the offer is really worth before you calculate the returns.
Common free bet mistakes
The biggest mistake is treating a free bet like cash and using it on a short-priced favourite, where the SNR penalty wipes out most of the value. Free bets are worth far more on higher odds, because the vanished stake is a smaller share of a big return. Another mistake is missing the offer's terms: minimum odds requirements, expiry dates, and whether the winnings are withdrawable or need rolling over. And the most expensive mistake of all is simply gambling the free bet when you could have locked in most of its value risk-free through matched betting. Check the terms, aim high on odds, and consider laying it off.
Free bet terms
- Free bet
- A bet funded by the bookmaker as a promotion. Almost always SNR, so a win pays only the winnings and not the stake.
- SNR (stake not returned)
- The standard free bet type. The stake is the bookmaker's, so a winning free bet returns winnings only. Effective odds are one lower than the sticker odds.
- Each way
- A bet split into a win part and a place part. The place part pays a fraction of the win odds if the selection finishes in the paying places.
- Matched betting
- Backing a selection at a bookmaker and laying it on an exchange to cover every outcome, turning a free bet into guaranteed cash worth about 70 to 80 percent of face value.
- Accumulator
- A single bet combining several selections, all of which must win. The combined odds are the product of every leg's odds.
- Retention
- The share of a free bet's face value you lock in as guaranteed profit through matched betting, typically 70 to 80 percent.
Related free betting tools on ToolsGambling.com
A free bet is one piece of getting value from a bookmaker. Pair this with our matched betting calculator to lock in guaranteed profit, the lay bet calculator for the exact lay stake, the acca insurance and each-way calculators, and the odds converter.
Free bet calculator FAQ
Evgeniy Volkov
Verified ExpertFullstack developer with a background in mathematics. I build the calculators and game-style tools on ToolsGambling with Pixi.js and modern web tech, and every result uses transparent probability formulas you can verify yourself.