Calculators
Work out your numbers before you place a bet — hedge a bookmaker bet at the exchange, check what a promo is really worth, split a stake across two bookies for an arb, or dutch several runners in one race.
Your bet
Enter the back bet you're placing at the bookmaker and the lay odds available at the exchange.
Your own cash at the bookmaker. The lay keeps your loss as small as possible either way.
$
%
What to lay
Place this lay at the exchange and your result is the same whichever way the bet goes.
Fill in your bet details to see the lay stake.