Polymarket Tools
Free tools to help you trade smarter on Polymarket. Calculate fees, check country availability, and more.
Fee Calculator
Calculate Polymarket trading fees by market category, trade size, and probability. Compare to sportsbook vig.
Profit/Loss Calculator
Calculate net profit or loss on any Polymarket trade including exact fees, ROI, and math breakdown.
EV Calculator
Calculate expected value by comparing market price to your true probability estimate.
Odds Converter
Convert between Polymarket prices, decimal, American, fractional, Hong Kong, Malay, and Indonesian odds.
Position Sizer
Calculate a sensible position size using the Kelly Criterion.
Referral Calculator
Project Polymarket referral earnings over 12 months.
Country Availability Checker
Check if Polymarket is available in your country. Instant status for 190+ countries.
Related Resources
Learn more about how Polymarket fees work, check country availability, or follow our signup guide to get started. For a full platform overview, read our Polymarket review.