American odds, also called moneyline odds, are the standard format at US sportsbooks. Positive numbers such as +200 show profit on a 100-unit stake. Negative numbers such as -150 show how much must be risked to win 100 units of profit.
Decimal odds show the total return multiplier, including the original stake. They are common in Europe, Canada, Australia, betting exchanges, and parlay/accumulator calculations because they are easy to multiply.
This American to Decimal Odds Converter turns US moneyline prices into decimal odds. It also shows the fractional equivalent, break-even probability, profit, and total return for your stake.
Quick examples: -200 converts to 1.50, -110 converts to about 1.91, +100 converts to 2.00, and +150 converts to 2.50.
American to Decimal Odds Converter
Convert moneyline odds into decimal, fractional odds, probability, profit and return.
How to Use the Converter
- Enter American odds: type a moneyline price such as -110, +150, -200, or +300.
- Add your stake: the calculator shows profit and total return for that stake.
- Read the decimal result: decimal odds show total return per 1 unit staked.
- Check the probability: the tool also shows the break-even chance implied by the price.
Moneyline to Decimal Formula
The formula depends on whether the American price is positive or negative.
| American price | Type | Formula | Example |
|---|---|---|---|
| Positive, such as +150 | Underdog / plus-money price | (American ÷ 100) + 1 | +150 → 2.50 |
| +100 | Even money | 2.00 | +100 → 2.00 |
| Negative, such as -200 | Favorite / minus-money price | (100 ÷ absolute American odds) + 1 | -200 → 1.50 |
Common Conversion Table
| American odds | Decimal odds | Fractional odds | Break-even probability | Plain meaning |
|---|---|---|---|---|
| -500 | 1.20 | 1/5 | 83.33% | Heavy favorite |
| -200 | 1.50 | 1/2 | 66.67% | Strong favorite |
| -150 | 1.67 | 2/3 | 60.00% | Favorite |
| -110 | 1.91 | 10/11 | 52.38% | Common spread or total price |
| +100 | 2.00 | 1/1 | 50.00% | Even money |
| +150 | 2.50 | 3/2 | 40.00% | Moderate underdog |
| +200 | 3.00 | 2/1 | 33.33% | Underdog |
| +400 | 5.00 | 4/1 | 20.00% | Larger underdog |
| +1000 | 11.00 | 10/1 | 9.09% | Long shot |
Worked Example: Convert -110 to Decimal Odds
A price of -110 means you must risk 110 units to win 100 units of profit.
Decimal odds = (100 ÷ 110) + 1 = 1.91
A 100-unit winning bet at decimal odds of 1.91 returns about 191 units total: 91 units profit plus the original 100-unit stake.
Worked Example: Convert +150 to Decimal Odds
A price of +150 means a 100-unit winning bet makes 150 units of profit.
Decimal odds = (150 ÷ 100) + 1 = 2.50
A 100-unit winning bet at this price returns 250 units total: 150 units profit plus the original stake.
Why Convert Moneyline Odds to Decimal?
| Use case | Why decimal format helps |
|---|---|
| Payout calculation | Total return is simply stake × decimal odds. |
| Parlays and accumulators | Decimal odds can be multiplied across legs. |
| Betting exchanges | Exchanges usually display decimal odds. |
| Line shopping | Converting formats makes it easier to compare prices across sportsbooks. |
| Probability work | Break-even probability is easy to calculate from decimal odds: 1 ÷ odds. |
American vs Decimal Odds
These are only two ways to display the same underlying betting price. The format does not change the payout or make a bet better.
| Format | What it shows | Example |
|---|---|---|
| American / moneyline | Profit on 100 units or stake needed to win 100 units. | +150 means 150 units profit on a 100-unit winning bet. |
| Decimal | Total return multiplier, including stake. | 2.50 means 2.5 units returned per 1 unit staked. |
| Fractional | Profit as a ratio of stake. | 3/2 means 3 units profit for every 2 units staked. |
Important Limitation
This converter only changes the odds display format. It does not tell you whether the bet has value. To judge value, compare the break-even probability from the price with your own estimate of the outcome’s real chance.
Frequently Asked Questions
How do you convert negative American odds to decimal?
Divide 100 by the absolute value of the American odds, then add 1. For example, -200 becomes (100 ÷ 200) + 1 = 1.50.
How do you convert positive American odds to decimal?
Divide the American odds by 100, then add 1. For example, +200 becomes (200 ÷ 100) + 1 = 3.00.
What is -110 in decimal odds?
-110 converts to about 1.91 in decimal odds. This is the common US spread and total price.
What is +100 in decimal odds?
+100 converts to 2.00. This is even money: a winning bet returns double the stake.
Are European odds the same as decimal odds?
Yes. “European odds” and “decimal odds” usually refer to the same format.
Which odds format gives better value?
No format gives better value by itself. American, decimal, and fractional odds are different displays of the same underlying price.