Betting Odds Calculator
100/1 means that for every £1 you stake, you win £100 in profit if the bet wins. Your stake is returned on top of that, so a £1 bet at 100/1 returns £101 total.
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The implied probability is 0.99%. This means the bookmaker prices this outcome as having roughly a 0.99 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 100/1 Odds
| Stake | Profit | Total Return |
|---|---|---|
| £1.00 | £100.00 | £101.00 |
| £5.00 | £500.00 | £505.00 |
| £10.00 | £1,000.00 | £1,010.00 |
| £20.00 | £2,000.00 | £2,020.00 |
| £50.00 | £5,000.00 | £5,050.00 |
| £100.00 | £10,000.00 | £10,100.00 |
Odds Conversion
| Format | Value |
|---|---|
| Fractional | 100/1 |
| Decimal | 101 |
| American | +10000 |
| Implied Probability | 0.99% |
How the Calculation Works
Winnings: Stake x (100 / 1) = Profit. So £10 x (100 / 1) = £1,000.00 profit.
Probability: 1 / (100 + 1) = 1 / 101 = 0.99%.
Decimal odds: (100 / 1) + 1 = 101. Multiply your stake by this to get the total return including your stake.
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