Convert from electron to quintal [Spanish]

Unit Definition (electron)
The electron is the mass of the electron, often used as a unit of mass in particle physics. An electron has a mass of about 9.109 382 x 10E-31 kilogram, 9.109 382 x 10E-28 gram, or 0.510 9989 million electronvolts.

Unit Definition (quintal [Spanish])
The quintal [Spanish] is a traditional unit of weight in Spain. The Spanish quintal is 100 libras (about 46 kilograms or 101 pounds).