Surebet calculator
Split your stakes so every match result pays the same, with stake tax, refunds and half results of Asian lines.
How the surebet calculator works
The surebet calculator splits one total stake across 2 or 3 bets with different bookmakers so that every result of the match pays the same. Pick the bets, type in the odds and the amount, and it shows the stake for each bet, the guaranteed profit or loss and a settlement table for every possible score. When the prices are not a surebet, it splits the stakes so the loss in the worst case is as small as it can be.
Everything is calculated in your browser, with no account and nothing sent to a server. It works on a phone too.
The surebet formula
A set of bets covering every outcome is a surebet when the sum of 1 / odds is below 1:
- without stake tax: 1 / odds 1 + 1 / odds 2 + 1 / odds 3 < 1,
- with a stake tax: multiply each price by (1 − tax rate) first. With the 12% tax Poland charges on every stake, that is 1 / (0.88 × odds 1) + … < 1.
The stake on each bet is total stake × (1 / its odds) / the sum. That is what makes the return the same whatever the result. The profit is 1 / sum − 1.
Worked example: a three-way 1X2 surebet
Home win at 2.25 with one bookmaker, the draw at 3.70 with a second and an away win at 3.80 with a third, 100 in total:
| without stake tax | with a 12% stake tax | |
|---|---|---|
| sum of 1 / odds | 0.9779 | 1.1112 |
| stake on the home win | 45.45 | 45.45 |
| stake on the draw | 27.64 | 27.64 |
| stake on the away win | 26.91 | 26.91 |
| return, whatever the result | 102.26 | 89.99 |
| result | +2.26% | −10.01% |
The same prices that lock in a profit without tax lose a tenth of the stake once 12% comes off every bet. That is why the calculator has a stake tax setting and a tax-free switch for each bet. Why such gaps between bookmakers exist at all, and how often they appear, is explained in what arbitrage betting is.
What else the calculator handles
- 2 or 3 bets from 19,980 realistic combinations: 955 of two bets and 19,025 of three, checked on every score from 0–0 to 11–11.
- Markets: 1X2, double chance, draw no bet, Asian and European handicap, total goals, team goals and both teams to score.
- Asian lines with refunds, half wins and half losses.
- A stake tax for the whole set, or none for one bet, for example a tax-free promotion or a bookmaker outside the taxed market.
- Stake rounding and a fixed stake for one bet, such as a bookmaker's limit or the amount of a free bet.
- Two modes: dynamic, where you build the set bet by bet and each list only offers what can still complete it, and static, with a search over the ready-made combinations.
- Favourite combinations: the classic surebets are pinned from the start, and you can pin any set you use often or unpin the ones you do not.
Before you place the bets
Prices move within minutes, and a surebet only exists while every price in it does. Check the risks in arbitrage betting risks, the first steps in how to start arbitrage betting, and what bookmakers do to accounts that arb in bookmaker limits. When one price is a clear mistake, the bookmaker may void it: see palpable errors.
FAQ
How do you calculate a surebet?
Add up 1 / odds for every outcome, for example 1 / 2.25 + 1 / 3.70 + 1 / 3.80 = 0.9779. A sum below 1 means a surebet, and 1 / 0.9779 − 1 = 2.26% is the profit. With a stake tax, multiply each price by (1 − tax rate) before you add them up.
How many bets can a combination have?
Two or three. You pick them from 19,980 combinations that cover every result of the match, Asian lines with refunds and half results included.
Can I use the calculator with a free bet?
Yes, as a fixed stake: enter the free bet's amount as the stake of that bet and the calculator splits the other stakes around it. A free bet whose stake is not returned pays only stake × (odds − 1), and how to turn one into a fixed amount is worked through in advanced arbitrage strategies.
Does the calculator find surebets for me?
No. It works out the stakes for the odds you type in. Finding the prices means comparing bookmakers yourself or with arbitrage betting software.
Is the surebet calculator free?
Yes, with no sign-up and no account, on a computer or a phone. Your browser keeps only its settings and your pinned combinations, and the odds you type are not sent anywhere.