Free Tool
Polymarket Profit Calculator
Calculate your potential ROI on prediction market trades
How Prediction Market Math Works
Shares = Bet Amount ÷ Odds
If you bet $100 at 40% odds (0.40), you receive 250 shares ($100 ÷ 0.40 = 250).
If You Win: Payout = Shares × $1
Each winning share pays out $1. With 250 shares, you'd receive $250 — a $150 profit (150% ROI).
If You Lose: Loss = Your Bet
Losing shares are worth $0. You lose your entire $100 bet (-100% ROI).
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Use PolySimulator to test your predictions with $1k fake USDC.
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