Bet calculator.

A bet calculator works out what a wager returns before you place it. You enter the odds and your stake, and it shows the total return, the profit on top, and the implied probability. It removes the guesswork from a betting slip and lets you compare prices and bet types quickly, in any odds format.

Multiply your stake by the decimal odds for the total return, then subtract the stake for the profit. A 10 stake at 2.50 returns 25 and profits 15. Fractional and American odds convert to decimal first, after which the calculation is the same for any single bet.

They are three ways of writing the same price. Decimal shows the total return per unit staked, including your stake. Fractional shows the profit per stake as a fraction. American is based on 100, positive for the profit on a 100 stake and negative for the stake needed to win 100. This calculator handles all three.

Enter your odds and stake and the calculator shows it instantly. As a rule, your winnings are your stake multiplied by the decimal odds, minus the stake. So 20 at odds of 3.00 returns 60 and wins 40. For multiples and system bets, use the matching specialist calculator for an exact figure.

A single is a bet on one selection with one stake, the bet this page calculates. It wins if that selection wins and loses if it does not, with no other legs involved. It is the simplest bet and the lowest-variance way to wager, since your result depends on just one outcome.

An accumulator, or parlay, combines several selections into one bet where every leg must win. The odds multiply together, so the potential payout is far larger than a single, but one losing leg loses the whole bet. Use the parlay or accumulator calculator above to settle one exactly.

Use this page for a straight single bet. For multiples use the parlay or accumulator calculator, for racing use the each-way or Lucky 15, and for strategy use the arbitrage, dutching, vig, Kelly or implied probability tools. The grid above links each one with a short description of what it does.

An each-way bet is two bets: one on the selection to win and one on it to place, at a fraction of the odds. You settle the win part normally and the place part at the reduced odds if it finishes in the places. The each-way calculator above does both halves for you using your bookmaker’s place terms.

The total return includes your stake, while the profit is the winnings on top. This calculator shows both, so there is no confusion: the return is what lands back in your account if the bet wins, and the profit is what you are actually up. Decimal odds always describe the total return per unit.

Yes, every calculator on this site is completely free, needs no sign-up, and runs entirely in your browser so your numbers stay private. They are built to be fast, accurate and to show their working, whether you are settling a single bet or a complex system bet.

Odds-on is a price shorter than even money, where you stake more than you stand to win because the outcome is a strong favourite. For example 1/2, or 1.50 in decimal, returns 50 profit on a 100 stake. The opposite is odds-against, where the profit is larger than the stake.

A void bet is one that is cancelled and refunded, so your stake is returned and the bet is treated as if it never happened. It can occur when an event is abandoned, a non-runner is declared, or a handicap ends in an exact tie. In a multiple, a void leg simply drops out and the rest of the bet stands.

Yes. The maths of odds, stakes and returns is the same across football, horse racing, tennis, basketball and the rest. Some tools suit particular sports, such as Asian handicaps and Lucky 15s, but the core bet calculator works for any sport and any market with fixed odds.

It is the win chance the odds represent, found by dividing 1 by the decimal odds. Odds of 2.50 imply a 40% chance. It includes the bookmaker’s margin, so it slightly overstates the true chance, but it is a quick way to judge whether a price looks fair before you bet.