Odds Converter

Category: Gambling
- March 31, 2025
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Convert between American, Decimal, Fractional, and Implied Probability odds formats. Enter a value in any format and instantly see conversions to all other formats.

Example: +150, -200
Example: 2.50, 1.50
Example: 3/2, 1/2
Example: 40%, 66.7%

Calculator Options

Betting Calculator

$
To Win
$0.00
Total Payout
$0.00

Common Odds Conversion Chart

American Decimal Fractional Probability
+300 4.00 3/1 25.00%
+200 3.00 2/1 33.33%
+150 2.50 3/2 40.00%
+100 2.00 1/1 50.00%
-110 1.91 10/11 52.38%
-150 1.67 2/3 60.00%
-200 1.50 1/2 66.67%
-300 1.33 1/3 75.00%
-500 1.20 1/5 83.33%

Formula Reference

American to Decimal:
If American > 0: (American / 100) + 1
If American < 0: (100 / |American|) + 1

Decimal to American:
If Decimal ≥ 2.00: (Decimal - 1) × 100
If Decimal < 2.00: -100 / (Decimal - 1)

Decimal to Implied Probability:
(1 / Decimal) × 100%

Fractional to Decimal:
(Numerator / Denominator) + 1

What Is the Odds Converter?

The Odds Converter is a simple tool that helps you switch between four common types of betting odds: American, Decimal, Fractional, and Implied Probability. Whether you're calculating potential winnings or trying to compare odds across different formats, this tool provides a fast and accurate way to get the numbers you need.

Why Use an Odds Converter?

Betting platforms and sports markets often display odds in different formats. If you're switching between sites or trying to match your calculations with a sportsbook, you'll want to quickly understand what those numbers mean in your preferred format.

  • Save time converting odds manually
  • Improve betting decisions with clear comparisons
  • Calculate your payout before placing a bet
  • Plan your bets more effectively

How to Use the Odds Converter

Using the calculator is straightforward:

  1. Enter a value in any odds format — American, Decimal, Fractional, or Implied Probability.
  2. All other formats will automatically update with the equivalent values.
  3. You can click "Copy" next to any field to save it to your clipboard.
  4. Use the options section to change decimal precision or simplify fractional odds.

How the Betting Calculator Helps

Below the odds converter is a betting calculator. This tool lets you input your wager and odds to instantly see your potential profit and total payout.

  • Enter your Wager Amount
  • Input the Odds in any format
  • Choose the correct Format or leave it on Auto
  • Click Calculate to view your results

This feature is perfect if you're comparing multiple bets or managing your budget before placing a wager.

Conversion Chart for Quick Reference

The tool includes a built-in conversion chart displaying common American odds alongside their Decimal, Fractional, and Implied Probability equivalents. This visual aid is helpful for quick checks and strategy comparisons.

Who Can Benefit from This Tool?

Anyone involved in betting or analyzing odds will find this tool useful, including:

  • Sports bettors evaluating different matchups
  • Punters switching between international sportsbooks
  • Players comparing win probabilities for games like Blox Fruits
  • Golf fans using a golf handicap tool alongside betting odds
  • Gamers optimizing resource decisions in tools like the Diablo 3 Gem Calculator

Frequently Asked Questions

Can I input any type of odds?

Yes. The tool accepts American (+150, -110), Decimal (2.50), Fractional (3/2), and Implied Probability (66.7%).

What’s the most accurate odds format?

They're all accurate — they just express the same value in different ways. Use the format you’re most comfortable with.

Is this useful for games like Blox Fruits or Diablo 3?

While this tool is built for betting odds, the logic of conversions and percentages can be helpful in planning optimal builds, understanding Blox Fruits stats, or strategizing Diablo 3 gem upgrades and gem crafting outcomes.

Can I customize the results?

Yes. You can change how many decimal places are shown and whether to simplify fractional odds or round American odds.

In Summary

The Odds Converter and Betting Calculator is a practical, easy-to-use tool for converting odds formats and calculating potential winnings. Whether you're making sports bets, analyzing probabilities, or optimizing strategies in other games, it helps you understand the numbers quickly so you can make confident decisions.