Length: m, km, cm, mm, mi, ft, in
Mass: kg, g, lb, oz, t
Temperature: °C, °F, K
Area: m², km², ha, acre
Volume: L, mL, gal, qt
Time: s, min, h, d, y
Speed: m/s, km/h, mph
Pressure: Pa, bar, atm, psi
Energy: J, cal, kWh, eV
Data: B, KB, MB, GB, TB
Angle: °, rad, grad