How to Use Betstamp's Odds Converter
The Betstamp Odds Converter makes it simple to switch between decimal odds, American odds, and fractional odds — helping you understand potential payouts no matter what format you're looking at.
Decimal odds are the most widely used odds format globally. They represent the total payout including your stake. For example, if you place a $100 bet at 2.50 odds, your total payout is $250 (2.50 × $100). That includes your initial stake, so your net profit is $150. In our converter, 2.50 decimal odds is the same as +150 in American odds and 3/2 in fractional odds.
American odds are most common in the U.S. Positive numbers (e.g., +120, +300) show how much profit you’d make on a $100 wager. So a +300 bet means a $100 wager pays out $400 total ($300 profit + $100 stake). Negative odds (e.g., -200) show how much you’d need to bet to profit $100. So -200 means you must risk $200 to make $100. Betstamp’s converter quickly translates these to their decimal and fractional equivalents.
Fractional odds, common in the UK and Ireland, show profit relative to your stake. A 5/1 line means you'd win $500 profit on a $100 bet. A 1/2 line means you win $50 profit on a $100 bet. That’s equivalent to -200 in American odds or 1.50 in decimal odds.
The Betstamp converter also calculates the breakeven win probability for each odds format — a key stat for sharp bettors. For example, +100 odds have a 50% breakeven point. If you’re betting on something with +400 odds, you only need to be right 20% of the time for it to be profitable in the long run.
Understanding breakeven win probability can help you quickly evaluate whether a bet offers value. Let’s say you see +900 odds on a longshot. The breakeven probability there is just 10%—meaning you only need to win that bet 1 out of every 10 times to break even. If your own research suggests there’s a 12.5% chance of winning, then that bet is actually profitable over time, since your estimated “true” probability exceeds the breakeven mark.
This tool isn’t just about translating odds; it’s about giving you instant insight into when the numbers are actually in your favor.
With Betstamp PRO—the most advanced top-down betting odds screen in the market. Bettors will find hundreds of daily betting edges with ease, allowing you to scale your profits long-term. Click the banner to book a free demo.
