Free Kalshi Tools

Free, no-signup research and planning tools for Kalshi traders. The calculators use the same fee and sizing math as our engine; the live scanners are read-only. Nothing here places a trade.

Featured · Calculator

Prediction Market Fee Calculator

Compare dated Kalshi, Gemini, and Polymarket platform fees, rebates, and builder charges without hiding series, category, or eligibility unknowns. This read-only page never places an order. Treat size as a lead to investigate, not a trade signal to copy.

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Featured · Read-only flow research

Kalshi Whale Tracker

Inspect recent large anonymous fills and grouped YES/NO flow. It is research context, not a trader identity or automatic signal. This read-only page never places an order. Treat size as a lead to investigate, not a trade signal to copy.

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Calculator Kalshi Kelly Calculator

Turn your edge and bankroll into an optimal position size — fractional Kelly, the safe default.

Open Kalshi Kelly Calculator → Live scanner Kalshi Biggest Movers

Which Kalshi markets are repricing right now — live, and spread-gated so you see real movement, not thin-book noise.

Open Kalshi Biggest Movers → Live scanner Popular Kalshi Markets Today

What Kalshi traders are actually trading today — live markets ranked by real 24-hour volume, not picks.

Kalshi daily-high temperature markets vs a live forecast — where the model and the market disagree, city by city.

Open Kalshi Weather Edge →