OSOTOTO

Betting

🔁 Odds Converter

Convert decimal, fractional, American, Hong Kong & implied probability instantly.

Decimal odds

Result

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How it works

The formula

Implied % = 100 / decimal. American = (dec−1)×100 if dec≥2, else −100/(dec−1). Fractional = dec−1.

Example: Decimal 2.50 → 40% implied, +150 American, 3/2 fractional.

FAQ

Questions

Which odds format is best?

They express the same probability — decimal is easiest for math, American is common in the US, fractional in the UK.

What is implied probability?

The break-even win chance the odds represent, before the bookmaker margin.

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For entertainment & education only. OSOTOTO does not offer gambling. Results are mathematical estimates — variance means real outcomes differ. 18+. Need support? Self-check.