Free research calculators

Polymarket tools

Quick calculators for reading Polymarket prices and sizing a hypothetical YES or NO position. No wallet connect and no order ticket — Polydata is research only and never executes trades.

• Odds converter

  Turn a Polymarket share price (¢) into implied probability, American odds, and decimal odds — the usual “odds to probability” lookup.

• Payout calculator

  Pick YES or NO, enter buy price and stake, get contracts, win payout, profit, and ROI. Polymarket does not charge a winner fee.

Also useful: methodology · glossary · market screener · disclaimer.