Moneyline Sports Calculator

Turn US moneyline odds into decimal, fractional and a percentage.

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. Type in the American moneyline odds (such as -150 or +220)
  2. Pick whether the amount you enter is what you’re risking or what you want to win
  3. Enter the dollar amount
  4. Check your risk, to-win, total payout, and the 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 is simply a bet on who wins, straight up. No spread, no handicap, just the team or player you back to win. American moneyline odds show 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 minus sign marks the favourite. -150 means you risk $150 to win $100 (or $1.50 for every $1 of profit you want). That works out to an implied probability of around 60%.

What does +220 mean?

A plus sign marks the underdog. +220 means a $100 stake brings $220 in profit, for a total payout of $320. The implied probability is roughly 31%.

How do I turn moneyline into decimal odds?

For plus odds, divide by 100 and add 1, so +150 becomes 2.50 decimal. For minus odds, divide 100 by the number’s absolute value and add 1, so -150 = (100/150) + 1 = 1.667.