The math before the click.

Free tools we use on our own Kalshi trades: what's moving today, what a trade costs, and whether it's worth taking.

Live · updated 3m ago

Best Kalshi Bets Today

The most-traded markets right now, with price, spread and where smart money sits.

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1Who will win the Ballon d'Or in 2026? · Kylian Mbappe16.5¢5,705,083 today

2Who will win the Ballon d'Or in 2026? · Lamine Yamal7.5¢5,448,727 today

3Who will win the Ballon d'Or in 2026? · Lionel Messi0.5¢3,270,137 today

What it costs

Fees decide whether a small edge is an edge at all.

Fee CalculatorBuy at X, sell at Y: what Kalshi charges, what you keep, and your break-even price.Sports Maker FeesWhich sports series charge makers, and what a resting order saves you.Maker / Taker SimulatorNet profit on a round trip for all four maker and taker combinations.

Is it worth it

Price, probability and how much to put on it.

Expected ValueYour probability against the market's price, after fees.Odds ConverterKalshi cents to American, decimal and implied probability.Kelly SizerStake size from your edge and bankroll: full, half and quarter Kelly.ArbitrageA sportsbook line against a Kalshi price: is there a locked profit after fees?

Getting paid to wait

Resting orders can earn more than the spread.

Liquidity RewardsYour share of a market's rewards pool, from a Kalshi link or the order book.