Candela is the fundamental SI unit of luminous intensity.
Candle is a unit of luminous intensity.
Carat
(Units Package Symbol) Carat is a unit of weight.
Celsius is a unit of temperature.
Cental is a unit of weight.
Centigrade is a unit of temperature.
Centimeter is the fundamental CGS unit of length.
Century is a unit of time.
Chain
(Units Package Symbol) Chain is a unit of length.
Cicero is a unit of length.