Odds Converter Tool 2026
Instantly convert between American, decimal, and fractional odds. See implied probability and compare betting lines across sportsbooks.
🔄 Odds Converter
📈 Odds Comparison Table
| American | Decimal | Fractional | Implied Probability |
|---|---|---|---|
| -500 | 1.20 | 1/5 | 83.33% |
| -200 | 1.50 | 1/2 | 66.67% |
| -110 | 1.91 | 10/11 | 52.38% |
| +100 | 2.00 | 1/1 | 50.00% |
| +150 | 2.50 | 3/2 | 40.00% |
| +200 | 3.00 | 2/1 | 33.33% |
| +500 | 6.00 | 5/1 | 16.67% |
🏈 Sports Betting Examples
NFL: Chiefs -200 vs Raiders +170
NBA: Lakers +120 vs Celtics -140
MLB: Yankees -250 vs Red Sox +210
College Football: Alabama -300 vs LSU +250
⚙️ Odds Converter API – Coming Soon
We're building an Odds Converter API to power your own applications, odds comparison sites, and betting calculators. Get real‑time conversions with high accuracy.
📡 Learn More (Coming Q2 2026)❓ Frequently Asked Questions
How do I convert American odds to decimal?
For positive American odds: Decimal = (American / 100) + 1. For negative American odds: Decimal = (100 / |American|) + 1.
What is implied probability?
Implied probability is the percentage chance that the odds suggest for an outcome. For decimal odds, it's 1 / decimal odds × 100.
Why do sportsbooks use different odds formats?
American odds are standard in the US, decimal is popular in Europe, and fractional is common in the UK. Our converter helps you compare them instantly.
Can I use this tool for live betting?
Yes, it updates instantly as you type. Great for understanding live odds across different sportsbooks.
Is there an API for odds conversion?
We're developing an Odds Converter API for automated use. Check back soon or sign up for updates.
Does the tool include vig/juice calculation?
This tool shows implied probability per outcome. For vig, sum the implied probabilities of both sides of a market.
🧠 The Playbook Experts
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Kevin Lee
Sportsbook Analyst · 6 yrs
Former odds compiler
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data refreshed March 26, 2026
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