Betting Odds Calculator

Fractional Odds5/4
Decimal Odds2.25
Implied Probability44.44%
£10 Profit£12.50

5/4 means that for every £4 you stake, you win £5 in profit if the bet wins. Your stake is returned on top of that, so a £4 bet at 5/4 returns £9 total.

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The implied probability is 44.44%. This means the bookmaker prices this outcome as having roughly a 44.44 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 5/4 Odds

Stake Profit Total Return
£1.00 £1.25 £2.25
£5.00 £6.25 £11.25
£10.00 £12.50 £22.50
£20.00 £25.00 £45.00
£50.00 £62.50 £112.50
£100.00 £125.00 £225.00

Odds Conversion

Format Value
Fractional 5/4
Decimal 2.25
American +125
Implied Probability 44.44%

How the Calculation Works

Winnings: Stake x (5 / 4) = Profit. So £10 x (5 / 4) = £12.50 profit.

Probability: 4 / (5 + 4) = 4 / 9 = 44.44%.

Decimal odds: (5 / 4) + 1 = 2.25. 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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