Odds calculator

Type the odds you see and how much you want to bet (or win). We’ll say what it pays in plain dollars.

What do you know?

Bet $10 at -150

you win $6.67

If it wins you get back $16.67: your $10 plus $6.67. If it loses, you lose the $10.

In plain words
-150 means bet $150 to win $100 (or $3 to win $2).
Smallest version
Bet $3 to win $2
Every $10 bet wins
$6.67
Other formats
-150 · 1.67 · 2/3
Chance the odds suggest
60.0%, about 60 in 100

This is a favorite: you risk more than you can win, because it’s more likely to happen. The chance above is what the price implies, including the sportsbook’s cut, not a prediction.

Cheat sheet

Common prices, said in small money.

OddsMeans$10 winsChance
-300Bet $3 to win $1$3.3375%
-200Bet $2 to win $1$567%
-150Bet $3 to win $2$6.6760%
-110Bet $11 to win $10$9.0952%
+100Bet $1 to win $1$1050%
+150Bet $2 to win $3$1540%
+200Bet $1 to win $2$2033%
+300Bet $1 to win $3$3025%
Seeing odds like 1.91 or 10/11?

Sportsbooks outside the US often write odds differently. They’re the same prices in a different format, and the calculator above reads all of them.

  • Decimal (1.91): what comes back for every $1 you bet, including that $1. At 1.91 a $1 bet returns $1.91, so you win 91¢. Under 2.00 is a favorite and over 2.00 is an underdog. Common in Europe, Canada, and Australia.
  • Fractional (10/11): what you win compared with what you bet. 10/11 means win $10 for every $11 you bet, which is exactly -110. 3/2 means win $3 for every $2. Common in the UK and Ireland.
AmericanDecimalFractional
-2001.501/2
-1501.672/3
-1101.9110/11
+1002.00Evens (1/1)
+1502.503/2
+2003.002/1
+3004.003/1

Content only. No wagers are placed or brokered here. 21+ · Gambling problem? Call 1-800-GAMBLER.

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