What 40/1 means
With fractional odds, the first number is what you win and the second is what you stake. At 40/1, every £1 you stake wins £40 in profit, and your stake is returned on top. Because you win more than you stake, it's an odds-against price: the bookmaker rates this outcome as less likely to happen than not.
It's read as "forty to one".
40/1 in decimal and American odds
| Format | 40/1 as | How it's worked out |
|---|---|---|
| Decimal | 41.00 | 40 ÷ 1 + 1 |
| American | +4000 | (41.00 − 1) × 100 |
| Implied probability | 2.4% | 1 ÷ 41.00 |
What 40/1 pays
| Stake | Profit | Total return |
|---|---|---|
| £1.00 | £40.00 | £41.00 |
| £2.00 | £80.00 | £82.00 |
| £5.00 | £200.00 | £205.00 |
| £10.00 | £400.00 | £410.00 |
| £20.00 | £800.00 | £820.00 |
| £50.00 | £2,000.00 | £2,050.00 |
| £100.00 | £4,000.00 | £4,100.00 |
How likely is 40/1 to win?
40/1 implies a 2.4% chance, or about 1 in 41. In other words, the bookmaker expects it to win about once in every 41 attempts. The true chance is usually a little lower than this, because bookmakers build a margin into every price.
40/1 each way
An each way bet splits your stake between a win bet and a place bet, with the place part paid at a fraction of 40/1. For a £5 each way bet (£10 in total):
| Place terms | Place odds | Returns if it wins | Returns if it places |
|---|---|---|---|
| 1/4 odds | 10/1 | £260.00 | £55.00 |
| 1/5 odds | 8/1 | £250.00 | £45.00 |
At 1/5 terms, a placed finish alone returns £45.00 from the £10 total stake, so the place part covers the whole bet with £35.00 to spare. Work out any each way bet.
If a horse at 40/1 is withdrawn
A horse priced at 40/1 being withdrawn doesn't trigger a Rule 4 deduction. The scale only applies when the non-runner was 14/1 or shorter. Work out a Rule 4 deduction.
Prices either side of 40/1
See every common price explained, or convert any price with the odds converter.