Betting maths on the numbers you enter. Amounts are in pounds (£).
Everything is worked out in your browser. Nothing you type is sent or saved.
Guaranteed profit of at least £2.50 (up to £5.00, depending on the result) if you place these stakes at these odds. Market margin at these odds: +3.60% (an arb).
An arb is when the best odds on every outcome, from different places, add up to less than 100% in implied probability. Stakes in proportion to 1 ÷ odds make every outcome pay the same, so the result is fixed before the event starts.
Type a stake on any outcome and it becomes the anchor: its payout (stake × odds) is matched on every other side by stake = payout ÷ that side's odds. Typing a total stake, or pressing Split stakes, shares the total the same way. A locked stake never changes and the others balance around it. Rounded mode rounds the worked-out stakes to £5 under £100, £10 under £1,000 and £50 above, so the payouts differ a little. Prices move and bets can be voided or limited, so check each price before placing anything.
Results are a record of maths on the numbers you enter, not advice.
