Betting Odds Calculator

Fractional Odds1/5
Decimal Odds1.2
Implied Probability83.33%
£10 Profit£2.00

1/5 means that for every £5 you stake, you win £1 in profit if the bet wins. Your stake is returned on top of that, so a £5 bet at 1/5 returns £6 total.

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The implied probability is 83.33%. This means the bookmaker prices this outcome as having roughly a 83.33 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 1/5 Odds

Stake Profit Total Return
£1.00 £0.20 £1.20
£5.00 £1.00 £6.00
£10.00 £2.00 £12.00
£20.00 £4.00 £24.00
£50.00 £10.00 £60.00
£100.00 £20.00 £120.00

Odds Conversion

Format Value
Fractional 1/5
Decimal 1.2
American -500
Implied Probability 83.33%

How the Calculation Works

Winnings: Stake x (1 / 5) = Profit. So £10 x (1 / 5) = £2.00 profit.

Probability: 5 / (1 + 5) = 5 / 6 = 83.33%.

Decimal odds: (1 / 5) + 1 = 1.2. 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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