Football Accumulator Calculator

A football accumulator calculator multiplies your legs together and shows what the slip pays. £10 on a Saturday five-fold at 1.80, 2.10, 1.65, 2.40 and 1.90 has combined odds of 28.44, so a win returns £284.41. The free CasinoCalcs calculator takes decimal or fractional prices, so 4/5, 11/10 and 13/8 work just as well.

How the football accumulator calculator works

Each leg’s winnings roll onto the next. £10 at 1.80 becomes £18, which goes on the next leg at 2.10 for £37.80, and so on to £284.41. That’s why the odds multiply instead of adding. Mark any leg as lost and the slip is dead. Mark one as void, say the 2.40 game is postponed, and it’s treated as odds of 1.0, so the acca carries on as a four-fold paying £118.50.

Five legs is harder than it looks

Combined odds of 28.44 sound like a 1 in 28 chance. They’re not quite. Every price has the bookmaker’s margin built in, typically 4% to 6% on a match result market. Over five legs that compounds to something like 25%, so the fair chance of this slip is nearer 1 in 36. Adding a sixth “banker” at 1.30 knocks your chance down by about a quarter, for 30% more payout.

That’s the trade-off with accas. They pay big for small stakes, and they hand the bookie a bigger edge with every leg. The bookmaker margin calculator shows how much is built into a single match.

Football acca extras

• Acca insurance: many bookies refund your stake as a free bet if one leg lets you down. The acca insurance calculator works out what that’s worth.
• Acca boosts: a percentage added to the winnings, usually 5% to 50% by number of legs. Run it through the profit boost calculator.
• Cash out: if four legs are in and the last one is still to play, the cash out calculator shows whether the offer is fair.

New to football betting? How to bet on football goes through the main markets and what the margin does to an acca.

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