Decimal odds explained: the simplest way to read a price

Decimal odds show your total return per $1 staked, including the stake itself: odds of 2.50 mean a $1 bet returns $2.50 ($1.50 profit), and a $100 bet returns $250. They're the default in Canada, Europe, and Australia — and the easiest format to do math with.

Reading decimal odds

Multiply your stake by the decimal number and you have your total payout — that's the entire system. 1.91 × $110 = $210.10 back. Anything below 2.00 is a favorite (you profit less than your stake); 2.00 is even money; anything above is an underdog paying more than your stake.

Converting decimal odds to implied probability

Implied probability = 1 ÷ decimal odds. 2.50 → 40%. 1.91 → 52.4% (the standard −110 price). 1.50 → 67%. That probability includes the sportsbook's margin, which is why both sides of a market sum to more than 100% — stripping it out is called de-vigging.

Decimal vs American: same price, different clothes

For decimal odds of 2.00 or higher, American odds = (decimal − 1) × 100: so 2.50 = +150. Below 2.00, American odds = −100 ÷ (decimal − 1): so 1.91 = −110 and 1.50 = −200. The price is identical either way — only the notation changes.

Why many bettors prefer decimal

Payout math is one multiplication, comparing prices is instant (bigger number = bigger payout, always), and there's no mental gear-shift between favorites and underdogs like American's plus/minus system. Bankroll Guardian lets you display every odd in the app in either format — one setting, applied everywhere.

Bankroll Guardian is a bet-tracking and analytics tool — not a sportsbook, and none of this is betting advice. Betting carries risk; please bet responsibly.