Betting Odds Calculator

Fractional Odds25/1
Decimal Odds26
Implied Probability3.85%
£10 Profit£250.00

25/1 means that for every £1 you stake, you win £25 in profit if the bet wins. Your stake is returned on top of that, so a £1 bet at 25/1 returns £26 total.

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The implied probability is 3.85%. This means the bookmaker prices this outcome as having roughly a 3.85 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 25/1 Odds

Stake Profit Total Return
£1.00 £25.00 £26.00
£5.00 £125.00 £130.00
£10.00 £250.00 £260.00
£20.00 £500.00 £520.00
£50.00 £1,250.00 £1,300.00
£100.00 £2,500.00 £2,600.00

Odds Conversion

Format Value
Fractional 25/1
Decimal 26
American +2500
Implied Probability 3.85%

How the Calculation Works

Winnings: Stake x (25 / 1) = Profit. So £10 x (25 / 1) = £250.00 profit.

Probability: 1 / (25 + 1) = 1 / 26 = 3.85%.

Decimal odds: (25 / 1) + 1 = 26. 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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