Betting Odds Calculator
4/1 means that for every £1 you stake, you win £4 in profit if the bet wins. Your stake is returned on top of that, so a £1 bet at 4/1 returns £5 total.
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The implied probability is 20%. This means the bookmaker prices this outcome as having roughly a 20 in 100 chance of happening.
These are odds against – the potential profit is greater than your stake. The higher the first number relative to the second, the less likely the bookmaker thinks the outcome is.
Winnings Table for 4/1 Odds
| Stake | Profit | Total Return |
|---|---|---|
| £1.00 | £4.00 | £5.00 |
| £5.00 | £20.00 | £25.00 |
| £10.00 | £40.00 | £50.00 |
| £20.00 | £80.00 | £100.00 |
| £50.00 | £200.00 | £250.00 |
| £100.00 | £400.00 | £500.00 |
Odds Conversion
| Format | Value |
|---|---|
| Fractional | 4/1 |
| Decimal | 5 |
| American | +400 |
| Implied Probability | 20% |
How the Calculation Works
Winnings: Stake x (4 / 1) = Profit. So £10 x (4 / 1) = £40.00 profit.
Probability: 1 / (4 + 1) = 1 / 5 = 20%.
Decimal odds: (4 / 1) + 1 = 5. Multiply your stake by this to get the total return including your stake.
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