Examples for

From energy to momentum to magnetic field strength, Wolfram|Alpha has the world's most complete database of computable physical quantities. Query for common notations, basic dimensions, standard units and alternate terminology for thousands of physical quantities using Wolfram|Alpha. Obtain additional information on dimensionless quantities and compute dimensionless combinations of physical quantities.

Retrieve detailed data on physical quantities.

Calculate dimensionless combinations of physical quantities.

Explore dimensionless quantities that are used in many fields, including mathematics, economics, engineering and physics.