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Betting calculator

System bet calculator

Last updated: Written by Ellie Marsden, Senior Betting Editor Fact checked by Tom Brackley, Odds Analyst

Example result A trixie with 1.00 per line and three 2.00 winners returns 20.00 before a bonus.

What this calculator answers

Calculate named system bets from a shared decimal price. The tool counts the doubles, trebles and larger combinations for the selected structure, then applies relevant bonus and consolation rules.

Formula and worked example

Formula: System return = sum of winning combination returns plus any stated bonus or consolation amount. Each combination return = stake per line multiplied by its combined odds.

A trixie has three doubles and one treble. With all three selections at 2.00 and 1.00 per line, doubles return 12.00 and the treble returns 8.00, for 20.00 before any bonus.

Checks before using the result

  • Using total stake as if it were stake per line.
  • Assuming a named system includes singles when it does not.
  • Adding a bonus without checking its qualifying condition.

When the calculation does not apply

Named systems can use market specific bonus and consolation conditions. Check the market's settlement rules and the number of lines before relying on a figure.

Keep the number in context

A calculator shows the arithmetic. It doesn't tell you whether the price fits your read of the outcome or your budget. Decide the stake before you enter it. Check the market rules. Keep essential money out of it entirely.

Cross-check on a second tool. The calculator hub, Arbitrage or Kelly criterion cover the same numbers from a different angle. Same price conventions, so a decimal price in one is a decimal price in the other.

Read the odds format guide if you're new to the formats. Two minutes.

Reading a rounded result

Money is rounded to two decimals here. A real settlement applies its own rounding sequence, which can differ. Keep the original inputs written down if you're going to check the number later.

Unclear about an input? Find the stated market term. Don't guess. A quick sanity check: change one input by a small amount and see whether the result moves the way you expect.

That doesn't validate the market. It can flag a reversed sign, a mis-entered price format or a duplicated stake. Use the number to understand the arithmetic. It's not a reason to ignore a limit you set in advance.