Convert Moneyline Odds

American moneyline to decimal, fractional and probability.

Please enter valid odds
Please enter a valid stake amount
Results
Risk --
To Win --
Total Payout --
Decimal Odds --
Fractional Odds --
Implied Probability --

How to Use This Calculator

  1. Enter the American moneyline odds (say, -150 or +220)
  2. Pick whether the figure you’ll type is what you risk or what you want to win
  3. Type in the dollar amount
  4. Instantly see risk, to-win, total payout, and conversions

Formula

Negative moneyline (favourite, e.g., -150): To-win = Risk × (100 / |odds|)

Positive moneyline (underdog, e.g., +220): To-win = Risk × (odds / 100)

Decimal Odds = (|odds| + 100) / 100 if positive, (100 / |odds|) + 1 if negative.

Implied Probability = 1 / Decimal Odds.

Frequently Asked Questions

What's a moneyline bet?

A moneyline bet backs the outright winner of an event. No spread, no handicap, just the team or player you expect to win. American moneyline odds tell you how much you risk to win $100 on a favourite, or how much a $100 stake wins on an underdog.

What does -150 mean?

A negative number flags the favourite. -150 means you risk $150 to win $100, or $1.50 for every $1 you want in profit. That works out to an implied probability of around 60%.

What does +220 mean?

A positive number flags the underdog. +220 means a $100 stake nets $220 in profit, for a $320 total payout. Implied probability sits at about 31%.

How do I turn moneyline into decimal odds?

Positive odds: divide by 100, then add 1, so +150 becomes 2.50 decimal. Negative odds: divide 100 by the absolute value, then add 1, so -150 = (100/150) + 1 = 1.667.