Arbitrage calculator

Calculate stake split and guaranteed profit for any 2-way or 3-way arbitrage. Enter total stake and the odds at each book; we do the rest.

✓ Arbitrage found
Sum of inverses0.9307
Profit margin6.93%
Stake A @ 2.10€511.63returns €1074.42
Stake B @ 2.20€488.37returns €1074.42
Locked profit€74.42

How it works

An arb exists when 1/A + 1/B + 1/C < 1. Stake each leg in proportion to its inverse so every winning ticket pays the same profit.

Step by step

  1. Enter total stake, How much you are willing to risk across all legs.
  2. Enter the odds for each leg, Use decimal odds. Leave odds C blank for a 2-way market.
  3. Hit Calculate, Get the stake per leg, the implied probability, and the locked-in return.

FAQ

What if there is no arb?

The calculator will tell you the implied total probability and how far above 100% it is, i.e. the bookmaker margin you would lose.

Does this work for 2-way markets?

Yes. Leave odds C blank.