Betting calculators

Fifteen calculators on the same exact formulas as our guides. They run in your browser and send nothing to us.

Lucky 15, Yankee, Trixie, Heinz and every multiple, win or each-way.

Score chances, 1X2, totals and fair odds from expected goals.

How any line settles, quarter lines included, and the return.

One stake over several outcomes for the same return.

Qualifying bets and free bets, stake returned or not, with commission.

Every smaller parlay of 2, 3 or more legs, with the total risk and payout.

Decimal, fractional and American odds, and the probability they imply.

The overround of a market, the bookmaker's margin and the odds without it.

Payout, chance to win and the compounded margin of an accumulator.

The stake that grows a bankroll fastest when your edge is real, and fractional Kelly.

What a bet is worth per unit, and the break-even probability of any odds.

How much to bet on the other side to lock in a result.

Stakes on two or three outcomes for the same return whatever happens.

Returns of the win and place parts under any place terms.

Lay stake, liability and the result either way, with exchange commission.

A calculator for each full-cover bet

Each page has the bet calculator set up for that bet, what it is made of, what it costs win and each-way, and how many winners it needs:

Updated: 2026-09-26