Master Unit Converter


This converter requires the use of Javascript enabled and capable browsers. You may convert between any of the displayable Designation Category values in the drop down box. Enter a valid numeric value in the Conversion Quantity field (initially defaults to 1 and resets to 1) and then click on and select the Convert From field designation, then select a value, and select the Convert To field designation, and select a value. Click on the Convert Units button to actually convert the values. The calculated values will appear in the Converted Value field. To do another, click the Clear Values button and then enter a new value. (The last-used designations will remain but the Converted Value will be cleared and the Convert Quantity will be reset to 1.) Calculated accuracy of most current Javascript enabled browsers is generally 16 places. See the Constants information below the converter table.

Because of memory and bandwidth restrictions of those operating on modems, some of our individual converters may have more conversion values. Try both!

Designation Category
Convert From
Conversion Quantity


Convert To
Converted Value


Constants


Physics

Speed of light: c = 2.997925E8 m/s Electron charge: e = 1.6021E-19 Cb Electron mass: m = 9.11E-31 kgr Faraday's constant: F = 9.6487E4 Cb/mol Plank's constant: h = 6.6256E-34 J sec Rydberg constant: R = 1.097373E7 1/m Bohr radius: ao = 5.29167E-11 m Gravitational constant: G = 6.67E15 n m^2 / kg^2 Permitivity of free space: eo = 8.85E-12 Cb^2/ Nm^2 Permeability of free space: mu o = 4*piE-7 N/A^2

Chemistry & Thermodynamics

Avogadro's constant: Na = 6.02252E23 1/mol Boltzman's constant: k = 1.380622E-23 J/'K Universal gas constant: R = 8.3143 J / 'Kmol

Earth Science

Mean distance of Earth to Sun: 1.5E14 m Mass of the Sun: 1.99E30 kgr Mass of the Earth: 5.97E24 kgr

Standard Atmosphere at Sea Level


Density rho = 1.225 kgr/m^3

Temperature = 288.2 'K

Pressure = 101300 Pa

Viscosity = 1.79E5 Nsec / m^2


Ideal Gas Properties


Air

Molecular mass: 28.967 Gas constant: 287 J/ kgr'K cp = 1004 J/ kg'K (at 25'C) gamma = 1.4 (at 25'C)

Water Vapor

Molecular mass: M = 18.015 Gas constant: R = 461.5 J/kgrK cp = 1866 J/kgrK (at 25 'C) gamma = 1.33 (at 25 'C) Triple point: 273.16 'K
Version 7.8.6


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