These five calculators help you quickly convert odds, understand the bookmaker’s implied probability, price a combined bet, strip out the bookmaker’s margin, and work out a hedge. All calculations run directly in your browser.
Odds Converter
Enter odds in any common format – Decimal, Fractional, or American – and the tool instantly converts the other two formats. Useful when comparing offers from different bookmakers.
Odds Converter FAQ
Decimal odds show your total return per unit staked. Fractional odds show profit relative to stake (5/1 means 5x profit for a 1x stake, the decimal equivalent of 6.00). American odds are quoted as +N (profit on a 100-unit stake) or -N (stake needed to win 100 units). All three describe the exact same probability, just in different formats.
Fractional and American odds are rounded to standard market increments, so converting decimal odds back and forth can shift the payout by a few cents. Decimal odds are the most precise format for exact calculations.
Yes. Any odds a bookmaker publishes already have their margin built in – see our guide on why odds are not true probabilities for how that works.
Decimal is usually easiest, since a higher decimal number always means a better price. See our guide on odds shopping for why comparing prices matters.
Implied Probability Calculator
Every odds value hides an estimated probability that the bookmaker assigns to that outcome. Enter decimal odds and the tool calculates the implied probability using the formula 1 / odds x 100.
Implied Probability FAQ
It is the probability an outcome would need to have for the odds to break even, calculated as 1 divided by the decimal odds. It shows how likely the bookmaker’s price suggests an outcome is, before accounting for their margin.
Because bookmakers build a profit margin into every market. Read more in our guide to bookmaker overround and margins.
Implied probability includes the bookmaker’s margin. The true, fair probability strips that margin back out – which is exactly what our No-Vig Calculator does.
Accumulator / Parlay Calculator
Add two or more odds (decimal format) from your betslip and the calculator multiplies them to find the combined odds. It then shows the potential payout and net profit for your stake.
Accumulator / Parlay FAQ
An accumulator only wins if every single selection wins, and the combined probability of several independent events all happening is the product of their individual probabilities, not the sum – which is why the payout multiplies too.
Because one losing leg loses the entire bet, even if every other leg won. See our comparison in multi-bet vs single-bet risk.
Yes, mathematically – more legs mean higher combined odds – but each added leg also lowers your overall chance of winning the whole accumulator, since every leg has to land.
No-Vig (Fair Odds) Calculator
Strip the bookmaker’s built-in margin (the “vig” or overround) out of a market’s odds to see the fair, no-vig price behind them.
No-Vig Calculator FAQ
It is the bookmaker’s built-in profit margin, the reason the implied probabilities of all outcomes in a market add up to more than 100%. Removing it produces the theoretical fair odds a break-even bookmaker would offer. See bookmaker overround and margins explained.
They are commonly used as a rough value benchmark – comparing a bookmaker’s actual price against the no-vig fair price for the same market can highlight which side, if any, looks comparatively better priced. It is not a prediction of the result.
No. It only reprocesses odds a bookmaker has already set – it does not analyse teams, form, or any other factor. BAGOAL does not provide betting tips or predictions.
Hedging Calculator
Work out the stake needed on the opposite side of your bet to lock in a guaranteed profit (or minimise a loss), whatever the final result.
Hedging Calculator FAQ
Placing a second bet on a different outcome of the same event, often after odds have moved, so you lock in a profit or limit a loss regardless of the final result. See hedging your bets explained.
With the stake this calculator gives you, yes – by design, the profit works out equal either way, provided both odds are still available at the moment you place both bets.
Not necessarily. Hedging locks in a smaller, safer outcome but also caps the upside if your original bet would otherwise have won by a wide margin. It is a risk-management choice, not a way to guarantee extra profit.