Physical Quantities
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.
Physical Quantities
Retrieve detailed data on physical quantities.
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Calculate dimensionless combinations of physical quantities.
Compute dimensionless combinations:
Get information about a theorem in dimensional analysis:
Explore dimensionless quantities that are used in many fields, including mathematics, economics, engineering and physics.