• Length (l)
    foot (ft)
    1 ft = 0.3048 m
  • Mass (m)
    pound (lb (libra))
    1 lb = 0.45 kg
  • Time (t)
    second (s)
  • Electric Current (I)
    ampere (A)
  • Temperature (T)
    fahrenheit (°F)
    1 °F = 255.93 K
  • Force (F)
    pound force (lbf)
    1 lbf = 4.4482 N