Free online model rocketry tools and calculators

A growing collection of free, browser-based tools for model rocketry and high-power rocketry. Design 3D printable nose cones and couplers, calculate altimeter vent holes, predict apogee, size black powder ejection charges, estimate recovery drift and parachute descent rates, check body tube strength and fin flutter, generate laser-cut parts, plan visibility and tracking, read USB serial data from altimeters, and more. You'll also find tools built specifically for our altimeters and hardware: firmware updater, USB WiFi configurator, flight data downloader and device diagnostics. All tools run in the browser. Nothing to install, no account required for most features. Metric and imperial units throughout.

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