Aerospace Toolbox lets you convert units and transform axes representations and coordinate systems. The unit conversion utilities convert physical properties, such as acceleration, density, and temperature, between metric and English units. The axes transformation utilities create direction cosine matrices and convert spatial representations between Euler angles and quaternion vectors. The Euler angles can be in any of the twelve standard rotation sequences. The direction cosine (rotation) matrix transfers between coordinate systems, such as body and inertial; body and wind; Earth-centered, Earth-fixed (ECEF) and north-east-down (NED); and ECEF and latitude, longitude, and altitude (LLA). Other representations include geocentric and geodetic latitude.