Prediction Market Tools

Free calculators and utilities for smarter trading on Kalshi, Polymarket, and other prediction markets.

Dutching Calculator

Calculate optimal stake allocation across multiple outcomes for equal profit. Perfect for coverage bets on futures markets.

Determine optimal bet sizing based on your edge and bankroll for long-term geometric growth.

Find cross-platform arbitrage opportunities between Kalshi, Polymarket, and traditional sportsbooks.

Calculate expected value for any prediction market contract based on your probability estimate.

Our dashboard surfaces real-time mispricings by comparing live market odds to historical probabilities.