Convert between fractional, decimal, and moneyline odds in one place — and see the true win probability each price implies.
ENTER ODDS (ANY FORMAT)
Fractional (5/2), decimal (3.50), or moneyline (+250 / -150)
FRACTIONAL
5/2
DECIMAL
3.50
MONEYLINE
+250
IMPLIED WIN PROBABILITY
28.6%
KNOW WHAT TO BOX
Converting a price is step one. The edge is comparing it to the horse's real chance of winning — HandicapIQ gives you a calibrated win probability for every contender so you can tell an overlay from an underlay.
Fractional (7/2) is the traditional US/UK racing format — profit per unit staked. Decimal (4.50) is total return per unit, stake included — the cleanest for math and the standard on international tote boards. Moneyline (+350 / −150) is the American sportsbook format. They're three ways of saying the same thing; the converter shows all of them plus the implied probability.
Why probability is the number that matters
Every price is really a statement about how likely a horse is to win. Convert the odds to a probability, compare it to your own honest estimate, and you've found the only thing that makes a bet +EV: a gap where the price is longer than the true chance. That's an overlay — and finding them, race after race, is exactly what HandicapIQ is built to do. New to the terms? Start with the glossary.
Frequently asked
How do you convert fractional odds to decimal?
Divide the fraction and add 1. So 5/2 = 2.5 + 1 = 3.50 decimal; 7/2 = 4.50; 1/1 (even money) = 2.00. The decimal figure is your total return per 1 unit staked, including the stake.
What does 5/2 mean in decimal and moneyline?
5/2 fractional = 3.50 decimal = +250 moneyline, and implies about a 28.6% win probability. Enter any price above to see all four at once.
What is implied probability?
It's the win chance a price represents: 1 ÷ decimal odds. At 3.00 decimal (2/1), the implied probability is 33.3%. In a real market these add up to more than 100% across the field — that extra is the takeout/house margin.