Sports betting can be a massively lucrative form of gambling. Nowadays, there are a huge variety of different odds, bets, and online sportsbooks available. This page now features the best betting odds calculator to quickly show how much money different bets can payout.
Our team of experts will also provide in-depth breakdowns of the different types of sports betting odds available online. We will explain exactly how these odds are converted in the most simplistic way possible.
Those looking to jump into the sports betting action should check out the sites below. Each is known for providing excellent odds and safe payment options, 24/7.
These are some of the most popular sports betting websites operating today. Each has been highly-rated by our experts and provides fantastic odds and designs.
Calculator
How to Use Our Betting Odds Calculator
Those completely new to sports betting may have a difficult time understanding how exactly our odds payout calculator works. Fortunately, it’s much simpler than one might initially expect. Below is a two-step guide that explains how to use our betting odds calculator for the first time.
- First, enter the odds into one of three available spots: American (US, moneyline), Decimal (EU), Fractional (UK). This will convert them to the two other types of odds and give you the implied probability.
- If you want to calculate the win and payout amounts too, enter the amount of money you wish to invest into the Bet Amount ($) box. Keep in mind that $100 is the minimum amount.
For more information on betting odds and conversion, check out the following video:
Fractional Odds
Fractional odds, commonly known as UK odds, are represented by a fractional setup (e.g. 3/1) and are commonly used for betting on sports.
American Odds
American odds, commonly known as US or moneyline odds, are represented by either a negative or positive line depending on the probability of both outcomes (e.g. +160, -225).
Decimal Odds
Decimal odds, commonly known as European odds, are represented by a decimal number (e.g. 1.44) and are widely used not just in the EU but all across the world, too.
Odds Conversion Chart
The way that betting odds are presented will vary depending on where you are located. Four different types of betting odds are commonly found today. Most online sportsbooks allow their members to choose which type of these odds are featured. Our bet calculator can make the conversion of these odds extremely easy!
Below is a quick look at the various types of sports betting odds you can find today.
| American | Fractional | Decimal | Implied Odds |
|---|---|---|---|
| -500 | 1/5 | 1.20 | 83.3% |
| -450 | 2/9 | 1.22 | 81.8% |
| -400 | 1/4 | 1.25 | 80% |
| -350 | 2/7 | 1.29 | 77.8% |
| -333.3 | 3/10 | 1.30 | 76.9% |
| -300 | 1/3 | 1.33 | 75% |
| -275 | 4/11 | 1.36 | 73.3% |
| -225 | 4/9 | 1.44 | 69.2% |
| 125 | 5/4 | 2.25 | 44.4% |
| 137.5 | 11/8 | 2.38 | 42.1% |
| 900 | 9/1 | 10.00 | 10% |
| 1000 | 10/1 | 11.00 | 9.1% |
| 2000 | 20/1 | 21.00 | 4.8% |
| 5000 | 50/1 | 51.00 | 2% |
| 10000 | 100/1 | 101.00 | 1% |
| 100000 | 1000/1 | 1001.00 | 0.1% |
The Math Behind Converting Betting Odds
There’s plenty of math here; betting odds are just numbers, and the math is there to ensure they all make perfect sense! Whether we’re talking about simple odds conversion, implied probability, or other calculations, math is ever-present.
If you’re serious about wanting to become a successful sports betting enthusiast, you can’t keep relying on online calculators.
It’s extremely helpful to understand how to convert these odds to one another. Our betting odds calculator allows this to be done in seconds. Of course, understanding how to do this on your own without the need for a bet calculator has its advantages, too.
You have to be able to switch fractional to decimal, American to fraction, and everything in between within seconds.
It might seem complex, but once you understand what these numbers mean (Mason), we’re sure it won’t take too long for you to figure out the sports betting math.
American Odds Conversion
American to Decimal
American to Fractional
Decimal Odds Conversion
Decimal to Fractional
- Formula: Decimal Odds / 1 – 1
- Example: 5 | 5/1 – 1 = 4/1
Decimal to American
Fractional Odds Conversion
Fractional to Decimal
- Formula: Fractional Odds + 1
- Example: 5/4 | 5/4 + 1 = 2.25
Fractional to American
Converting Odds to Implied Probability
Now, let’s turn our focus away from betting odds conversion and towards implied probability calculations! But first and foremost, what is implied probability?
It represents the behind-the-odds probability of a winning bet. It’s easier to explain it with an example.
Understanding implied probability and being able to convert it from American/decimal/fractional odds on the fly will help you better assess the value of any given match.
The formula for calculating IP via American odds:
Betting Odds Calculator FAQ
If you’re too lazy to find your answers in the above-featured number-bomb, here’s a nice little shortcut that ought to help you out.
The - odds represent the money you need to bet in order to win $100. The + odds represent the amount of money that will be won by wagering $100.
Your bet is already included with these types of odds, saving bettors time trying to calculate how much profit they will earn on a given wager.
Of course, our betting odds calculator is available for the odds that do not clearly indicate profit.
These types of odds are meant to reveal the probability of an event happening. The lower the percentage, the riskier and more lucrative the sports bet will become.
To convert fractional to negative American odds, you have to divide -100 by the value of fractional odds (e.g., -100 divided by 1/5 equals -500).
To convert decimal to negative American odds, you have to divide -100 by the decimal value minus 1 (e.g. -100 divided by 1.5 minus 1 equal -200).
For positive odds, you’ll want to divide 100 by the sum of American odds and 100. Multiply the result by 100 to get the IP percentage.
For negative odds, take the American odds value divided by the sum of American odds value and 100, and multiply it by 100 to get the result in a percentage. Eliminate both negatives in the formula (by multiplying by -1), otherwise, you’ll get the wrong results.
