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Odds converter

American, decimal, fractional and implied probability — convert any one to the rest.

Type in any box; the others update.

Results appear as you type.

For education only — not betting advice.

How it works

How do American odds convert to probability?

Negative odds: probability = odds ÷ (odds + 100), using the positive number — so −110 is 52.4%. Positive odds: probability = 100 ÷ (odds + 100) — so +150 is 40%.

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Projections, hit rates and slips for every game — free during the beta.

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For research and entertainment only. 21+.