Terrestrial Impact Crater Dimensions. Adapted from BASIC code in a November 1996 Sky & Telescope article. See Sky & Telescope's BASIC listing page for the original code.

Tested successfully against:

Impactor Inputs
Impactor diameter (m)
Impactor density (kg/m3)
Impactor velocity (km/s)
Graze angle (deg. from horiz.)

Volume (m3)
Mass (kg)
Kinetic Energy (Joules)
Kinetic Energy (Kilotons of TNT)
Actual Diameter (m)
Apparent Diameter (m)
Actual Depth (m)
Apparent Depth (m)
Target Removed (m3)
Ejecta Spread (m)