Betting Odds Calculator

Fractional Odds1/8
Decimal Odds1.13
Implied Probability88.89%
£10 Profit£1.25

1/8 means that for every £8 you stake, you win £1 in profit if the bet wins. Your stake is returned on top of that, so a £8 bet at 1/8 returns £9 total.

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The implied probability is 88.89%. This means the bookmaker prices this outcome as having roughly a 88.89 in 100 chance of happening.

These are odds on – your stake is greater than the potential profit. The bookmaker considers this outcome more likely than not.

Winnings Table for 1/8 Odds

Stake Profit Total Return
£1.00 £0.13 £1.13
£5.00 £0.63 £5.63
£10.00 £1.25 £11.25
£20.00 £2.50 £22.50
£50.00 £6.25 £56.25
£100.00 £12.50 £112.50

Odds Conversion

Format Value
Fractional 1/8
Decimal 1.13
American -800
Implied Probability 88.89%

How the Calculation Works

Winnings: Stake x (1 / 8) = Profit. So £10 x (1 / 8) = £1.25 profit.

Probability: 8 / (1 + 8) = 8 / 9 = 88.89%.

Decimal odds: (1 / 8) + 1 = 1.13. Multiply your stake by this to get the total return including your stake.

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Written & Reviewed by Matt K
Sports Betting Analyst at Winners Media

I have been covering the UK betting industry since 2007, testing sportsbooks across mobile and desktop. At TabletBetting, I review betting sites, compare odds and payment methods, and track new bookmaker launches. My focus is on the mobile experience - how apps perform under real conditions, not just what the marketing says.
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