42 Speed of light = 4.533e+10 Kilometer per Hour

Cooking

45 Gallon (US)

170.34345 Liter

gal (US) → L

Data

21 Petabyte

0.02050781 Exabyte

PB → EB

Electric charge

9 Ampere Hour

32,400.00 Coulomb

Ah → C

Electric conductance

10 Siemens

10,000.00 Millisiemens

S → mS

Area

58 Are

5,800.00 Square Meter

a → m²

Capacitance

74 Abfarad

7.400e+10 Farad

abF → F