Betting Calculator
Work out potential profit, total return and implied probability for any single bet, free bet or lay bet — in decimal, fractional or American odds.
Last updated
Quick answer
Your total return is stake × decimal odds; your profit is the return minus your stake. The implied probability of the price is 1 ÷ decimal odds. A 10 stake at 2.50 returns 25.00 — 15.00 profit — and implies a 40% chance.
Betting Calculator
Free · no sign-up · calculates as you type
How the betting calculator works
| Bet type | Total return | Profit | Your risk |
|---|---|---|---|
| Single (back) | stake × odds | return − stake | stake |
| Free bet (stake not returned) | stake × (odds − 1) | same as return | nothing |
| Lay bet | liability + stake × (1 − commission) | stake × (1 − commission) | stake × (odds − 1) |
Worked example
You back a team at 5/2 with a stake of 20. In decimal that is 3.50, so the total return is 20 × 3.50 = 70.00, of which 50.00 is profit. The implied probability is 1 ÷ 3.50 = 28.6%.
Tips
- Fractional and American odds are converted automatically — switch the format next to the odds box.
- For bets with several selections, use the accumulator calculator.
- For horse racing each-way bets, use the each-way calculator.
Frequently asked questions
How do I calculate a betting return?
Multiply your stake by the decimal odds. The result includes your stake; subtract the stake to get the profit.
What is a free bet stake-not-returned?
With a free bet, only the winnings are paid — the free-bet stake itself is not returned — so the return is stake × (decimal odds − 1).
What is lay-bet liability?
When you lay a selection on an exchange, your liability is what you pay if it wins: backer's stake × (odds − 1).