Prediction markets, in your hands.
Every tool here translates Kalshi into the sportsbook language you already know. Drag the dot and the sentence rewrites itself. Fees use Kalshi's real formula. Teams and prices are examples.
Drag the price. Watch the odds change.
YES + NO always add up to about $1. Buying NO on a team is the same as buying YES on the other team. Fee = 7% × price × (1 − price) per contract when you buy instantly.
The edge is the gap between two numbers.
"Expected profit" is what the bet earns on average if LazyEdge's number is right, over many bets like it. Any single game still wins or loses. My bot's rule: bet only when the gap is 3+ points after the fee. 3–5 points = 1 unit, 5–10 = 2 units, 10+ = 3 units.
Your team's playing. Hold or sell?
"WETH it" = accept the best offer right now (instant, full fee). "List it" = post your price and wait for a buyer (about ¼ of the fee, but it may not sell). The halftime price is also the market's new guess at your team's chance.
Pick your line. Pay for safety.
Example: Kansas City favored by about 6.5. Each row is a Kalshi market: "KC wins by over X." Tap a row. Gray = the market's price. Cyan line = an example LazyEdge chance. Where cyan sits past the gray, that row has a gap.
Stack the legs. Watch the price.
A parlay only pays if every leg hits, so you multiply the chances: two 75% legs = 56%. That's why my bigger parlays use safer (more bought-down) legs. Real Kalshi parlay quotes land near this math, give or take a couple of cents.
Who takes more: the sportsbook or the fee?
The sportsbook cut assumes standard -110/-110 pricing on a coin flip, scaled to your side. Kalshi's cut is the fee only. Kalshi also has a gap of a cent or two between buy and sell prices on busy games.
Educational tool, not financial advice. Kalshi availability varies by state. Fees follow Kalshi's published formula (7% × P × (1−P) per contract to buy instantly; about a quarter of that when your offer is filled), rounded on real orders. Built by @DDKing987 to explain how I bet LazyEdge.