FDS Research

Learn more about altimeters, altimetry, altitude awareness, and more. Explore the research of Freefall Data Systems LLC.

Tools

Density altitude calculator →
Wing loading calculator →
Barometric altimeter error calculator →
Airport explorer →
Comparing 48 American dropzones →
Exit separation visualizer →
Exit separation calculator →

Interactive tools for skydivers.

Learn

Altitude types: pressure, indicated, true, density →
A skydiver's guide to how barometric altimeters work →
Twelve tips for improving your altitude awareness →

These materials are not a substitute for proper training by certified instructors. See, for example, the United States Parachute Association's Integrated Student Program, described in the Skydiver's Information Manual →