แปลงอัตราต่อรอง: six formats, instant results
1win is licensed under Curaçao 8048/JAZ and hosts 40,000+ betting markets daily. Use this free odds converter with รหัสโปรโมชั่น XLBONUS to translate decimal, fractional, American, Hong Kong, Indonesian, and Malay odds before you place your next bet.
แปลงอัตราต่อรอง
Enter any odds format below. All other formats update instantly.
How this calculator works
All betting odds are just different ways of expressing the same underlying probability. The odds 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.
Decimal odds represent total return per unit staked, including your stake. An odds 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.
Fractional odds 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) odds use positive numbers for underdogs and negative numbers for favorites. +150 means a 100-unit stake wins 150 profit. -200 means you need to stake 200 to win 100 profit.
Hong Kong odds equal decimal odds minus 1 (just the profit per unit). A decimal of 2.50 equals Hong Kong 1.50.
Indonesian odds 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 odds 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 implied probability formula is: probability = 1 / decimal odds. A price of 2.50 carries 40% implied probability. Comparing this figure against your own assessed probability tells you whether a bet has positive expected value.
All conversions are lossless within floating-point precision. Fractional odds 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+ markets across 30+ sports in decimal, fractional, and American formats. Switching formats mid-session can cost you if you misread the odds. สมัครสมาชิก with code XLBONUS to access the full odds range and claim your welcome offer instantly.
คำถามที่พบบ่อย
What is the most common odds format?
Decimal odds are the global standard used in Europe, Australia, and at 1win. Fractional odds remain popular in the UK. American (moneyline) odds dominate North American markets.
How do I convert decimal to fractional odds?
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 implied probability mean?
ความน่าจะเป็นโดยนัย is the percentage chance a bookmaker's price implies for an outcome. It equals 1 divided by the decimal odds. If the market prices an outcome at 2.00, the implied probability is 50%.
How are American odds converted to decimal?
For positive American odds: 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 market minus 100%. A 5% overround means the book keeps roughly 5 cents per dollar wagered. Lower overround means better value for the bettor.