MyCTMain
Terminal velocity

Aerospace engineering index

This calc uses a formula that ignores buoyancy (so should only be used for falling in air). Requires a drag coefficient and projected area of the body.
 Mass kg --- METRIC --- ng µg mg grams tonnes M tonnes -- IMPERIAL -- grains ounces pounds stones cwt tons --- OTHER --- u (Da) Troy ounces carats pennyweight Moons Earths Suns CS area m² --- METRIC --- nm² µm² mm² cm² km² -- IMPERIAL -- square inches sqare feet square yards square miles --- OTHER --- hectares acres dunams square chains tennis courts Drag coefficient Medium density kg/m³ g/m³ g/cm³ oz/in³ lb/ft³ Gravity m/s² mm/s² km/s² cm/s² inches/s² knots/s² g Terminal velocity m/s --- METRIC --- cm/s km/s -- IMPERIAL -- inches/second feet/second feet/minute - RECIPROCAL - min/mile min/km min/5 km min/10 km --- OTHER --- km/h mph miles/second knots furl's/f'night Mach c (light speed) CdA m² --- METRIC --- nm² µm² mm² cm² km² -- IMPERIAL -- square inches sqare feet square yards square miles --- OTHER --- hectares acres dunams square chains tennis courts Add

In order to find the terminal velocity, a drag coefficient (Cd) is required. Examples of approximate drag coefficients include: laminar flow on flat plate (0.001), aircraft (0.03), smooth ball (0.1), bullet (0.3), car (0.3), cyclist or skier (1.0), brick (2.1).
The density of air at sea level is ~1.5 kg/m³), and the strength of gravity is 1 g (or 9.80665 m/s²).