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Trading calculators

Every calculator uses the real Betfair price ladder, shows commission, and runs in your browser. Nothing is sent anywhere.

Hedge an open back or lay so you win the same on every outcome.

See exactly what a lay risks, or size a lay from the liability you can afford.

How many ticks a price must shorten to lock in the profit you want.

Plan a lay that you close by backing at a longer price.

Move a price by any number of ticks, or count the ticks between two prices.

Split a stake across several runners so any winner returns the same profit.

What exchange commission does to your profit and your real odds.

Implied chance for any price, plus the book percentage of a whole race.

Add up several backs and lays and see how to level the book at any price.

Decimal, fractional, American and implied probability, both ways.

Market notes, once a week