Cotes converter: six formats, instantané results
1win is licencié under Curaçao 8048/JAZ and hosts 40 000+ betting marchés quotidien. Use this free cotes converter with code promo XLBONUS to translate decimal, fractional, American, Hong Kong, Indonésien, and Malay cotes before you place your next bet.
Cotes converter
Enter any cotes format below. All other formats update instantanély.
How this calculator works
All betting cotes are just different ways of expressing the same underlying probability. The cotes converter takes any single format as input and derives a decimal representation first, then converts outward to every other format using the exact mathematical relationships between them.
Cotes décimales represent total return per unit staked, notamment your stake. An cotes of 2.50 means a 1-unit bet returns 2.50 units total (1.50 profit). This is the native format at 1win and most European sportsbooks.
Cotes fractionnelles are written as numerator/denominator (e.g. 6/4). Profit equals stake multiplied by numerator/denominator. A 6/4 bet on a 10-unit stake yields 15 units profit.
American (moneyline) cotes use positive numbers for outsiders and negative numbers for favorites. +150 means a 100-unit stake wins 150 profit. -200 means you need to stake 200 pour gagner 100 profit.
Hong Kong cotes equal cotes décimales minus 1 (just the profit per unit). A decimal of 2.50 equals Hong Kong 1.50.
Indonésien cotes work like American but scaled per unit: positive values show profit per unit staked; negative values show how much you stake per unit of profit.
Malay cotes range from -1 to +1. Positive values represent profit per unit; negative values represent required stake per unit of profit. A Malay of -0.67 approximates American -150.
The probabilité implicite formula is: probability = 1 / cotes décimales. A price of 2.50 carries 40% probabilité implicite. Comparing this figure against your own assessed probability tells you whether a bet has positive valeur attendue.
All conversions are lossless within floating-point precision. Cotes fractionnelles are approximated to the nearest standard fraction when displaying (e.g. 1.5/1 rounds to 3/2), though the calculator uses the exact decimal internally for all outputs.
Why use it at 1win
1win offers 40 000+ marchés across 30+ sports in decimal, fractional, and American formats. Switching formats mid-session can cost you if you misread the cotes. S'inscrire with code XLBONUS to access the full cotes range and claim your offre de bienvenue instantanély.
FAQ
What is the most common cotes format?
Cotes décimales are the mondial standard used in Europe, Australia, and at 1win. Cotes fractionnelles remain popular in the UK. American (moneyline) cotes dominate Nonrth American marchés.
How do I convert decimal to cotes fractionnelles?
Subtract 1 from the decimal, then express as a fraction in lowest terms. Decimal 2.50 becomes (2.50-1)/1 = 3/2 (written as 3/2 or "3 to 2").
What does probabilité implicite mean?
Probabilité implicite is the percentage chance a bookmaker's price implies for an outcome. It equals 1 divided by the cotes décimales. If the marché prices an outcome at 2.00, the probabilité implicite is 50%.
How are cotes américaines converted to decimal?
For positive cotes américaines: decimal = (American / 100) + 1. For negative: decimal = (100 / |American|) + 1. So +200 = 3.00 decimal and -200 = 1.50 decimal.
What is the overround and why does it matter?
The overround (also called vig or juice) is the sum of all implied probabilities in a marché minus 100%. A 5% overround means the book keeps roughly 5 cents per dollar misered. Lower overround means better value for the bettor.