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UnitsIQ for iPhone is now available.

UnitsIQ is efunda's iPhone version of its online unit conversion utilities. It features 927 scientific and engineering units in 78 categories, including hardness, wire, and sheet metal gage units. App Store

List Units: A B C D E-F G H-I J-L M N O-P Q-R S T U-Z

Geometric
Angle
Length
inch, foot, mm, mile, meter, ...
Area
Volume

Kinematics
Time
Velocity
mph, km/hr, ft/s, knot, ...
Acceleration
Volume Flow Rate

Kinetics
Mass
  lbm, kg, oz, carat, slug, ...
Density
Force
  lbf, kgf, newton, dyne, ...
Moment/Torque
Pressure
  psi, in-Hg, in-H2O, torr, bar, ...
Energy
Power
  hp, watt, Btu/s, ton (refrig.), ...

Miscellaneous
Temperature
Viscosity
Electric
Luminous
Magnetic
Thermal
Permeability
Wire Gages
Sheet Metal Gages
Hardness
more categories...

Currencies (updated daily)
US Dollar
Euro
Japanese Yen
Chinese Yuan (Renminbi)
more...

Fundamental Constants
Mathematical
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Atomic
Physical
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Glossary

Units » Velocity » Kilometer Per Hour

Units » Volume Flow Rate » Gallon (US, Liq.) Per Hour

Units » Electric Permittivity » Square Coulomb Per Newton Per Square Meter

Units » Acceleration » Kilometer Per Hour Per Second

Units » Volume Flow Rate » Gallon (UK) Per Hour

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