Returns Converter
Different brokers and countries quote returns in different formats. This converts any price into all four at once — decimal, American, fractional, and the implied probability behind it.
Track this automatically on your real positions
This runs one number, once. Yoseri applies the same math to every position you take — sizing, CLV and ROI computed for you, live on your dashboard. Free to start, no card.
The method.
What it does
Enter a price in any format and read it in every other, plus the implied probability (1 ÷ decimal returns) — the real number you should compare against your own estimate.
Why implied probability matters
Formats are cosmetic; implied probability is the signal. If your estimate of an outcome beats the broker's implied probability, you have an edge — regardless of how the returns are written.
Reading the margin
Add up the implied probabilities of every outcome in a market: anything over 100% is the broker's margin (the “vig”). Lower combined totals mean sharper, better-value brokers.
- D— decimal returns
- P— implied probability (margin included)
- Fractional— D − 1
The four formats are the same number dressed differently — decimal is the one to compute with.
A decimal price of 2.50.
- 1.Implied P = 1 / 2.50 = 40.0%
- 2.American = (2.50 − 1) × 100 = +150
- 3.Fractional = 2.50 − 1 = 3/2
- Implied probability includes the broker's margin — the market's true estimate is lower.
- Add up every outcome's implied probability; the excess over 100% is the vig (overround).
- Remove the vig before comparing the market to your own probability.
Educational only — not trading advice. Calculators and simulations are illustrative; past results and simulated outcomes don’t guarantee future returns. Position responsibly.
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