Calculators and worksheets for the numbers every go/no-go decision runs on. No sign-up, no download — they work right in your browser.
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These tools are free, require no sign-up, and run entirely in your browser — nothing you type is uploaded anywhere. They are built and maintained by the FlightDecide team, the same people who build the go/no-go decision-support app, and each one comes with the formula, a worked example, and the judgment context you need to actually use the number.
ToolsHeadwind and crosswind components from runway, wind, and gusts — including the gust component that matters in the flare.
Pressure altitude and density altitude from field elevation, altimeter, and temperature — see what altitude your airplane thinks it's at.
A printable, fill-in worksheet for setting your own ceiling, visibility, wind, and performance numbers before the pressure to fly shows up.
A repeatable structure for the decision every one of these tools feeds into.
Where the numbers come from, how to keep them honest, and how to say no gracefully.
Decode the forecast groups that decide whether your window is flyable.
The NOTAMs that actually change a GA flight — and how to not miss them.
FlightDecide runs winds, ceilings, visibility, NOTAMs, fuel, performance, and W&B for your specific flight window and aircraft — then gives you a GO / CAUTION / NO GO advisory you can verify against the raw data.
Get FlightDecide on the App StoreThese tools are educational aids for flight-planning practice. They are advisory only and not a substitute for your POH, an official weather briefing, or your own judgment as pilot in command (14 CFR 91.3). Sources are cited on each tool's page. Last reviewed: July 17, 2026.