How to read American odds , +/- explained in simple terms

American odds: This quick guide breaks down how to read American odds, what the symbols stand for, and how to calculate your potential winnings, whether you’re betting on the NFL, NBA, or March Madness.

American odds are the most common way to show betting lines in the United States. Whether you’re new to sports betting or switching from decimal or fractional odds, it’s important to understand how American odds work — especially the plus (+) and minus (–) signs.

What are American odds?

American odds are a way of expressing how much money you can win based on a $100 bet or how much you need to stake to win $100. They always come with a plus or minus symbol in front of the number.

Also read: What is a risk-free bet and is it really free?

What does the plus (+) mean in American odds?

The plus sign (+) indicates an underdog. It shows how much profit you’d make if you bet $100. For example:

• Odds of +200 means you win $200 profit on a $100 bet (total return: $300).
• Odds of +150 means you win $150 profit on a $100 bet (total return: $250).

What does the minus (–) mean in American odds?

The minus sign (–) means the team or outcome is the favourite. It shows how much you need to bet to win $100 profit. For example:

• Odds of –200 means you need to bet $200 to win $100 (total return: $300).
• Odds of –150 means you need to bet $150 to win $100 (total return: $250).

How to calculate winnings from American odds

Here’s a quick guide:

If the odds are positive:

Winnings = (Bet Amount) × (Odds ÷ 100)

Example: A $50 bet at +180 → $50 × 1.8 = $90 profit

If the odds are negative:

Winnings = (Bet Amount) ÷ (Odds ÷ 100)

Example: A $200 bet at –200 → $200 ÷ 2 = $100 profit

Also Read: What taxes do I owe on sports betting winnings in the US?

Why do American odds use plus and minus?

The plus and minus signs make it easy to see who is expected to win. The favourite always has a minus (–), meaning you have to risk more to win less. The underdog has a plus (+), offering a higher payout for a smaller stake.

When do sportsbooks use American odds?

American odds are the standard format in the US and are used by most sportsbooks for major leagues like the NFL, NBA, MLB, NHL, and college sports.

Understanding American odds is key to making smarter betting decisions. Just remember: a plus (+) means potential high reward with more risk, and a minus (–) means a safer bet with a smaller return. Now that you know how to read American odds, you’ll be ready to bet confidently — whether you’re backing a long shot or playing it safe with the favourite.

FAQs about American odds

What does +120 mean in betting?

It means you will win $120 profit on a $100 bet.

What does –120 mean in betting?

You need to bet $120 to win $100 profit.

Are American odds better than decimal odds?

It depends on what you’re used to. American odds are popular in the US, while decimal odds are common in Europe.

Can I convert American odds to decimal?

Yes. For positive odds: (Odds ÷ 100) + 1. For negative odds: (100 ÷ Odds) + 1.

Is a minus favourite always safer?

Not always. Favourites win more often, but returns are lower. Upsets still happen.