unit converter. pretty simple.
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DDUnitConverter.xcodeproj
DDUnitConverter
.gitignore
DDUnitConverter.1
DDUnitConverter_Prefix.pch
README.markdown
main.m

README.markdown

DDUnitConverter

A simple library for converting a value from one unit to another.

Usage

Simply copy the "DDUnitConverter" subfolder into your project, and #import "DDUnitConversion.h".

You can do the actual conversions like so:

NSNumber * value = [[DDUnitConverter velocityUnitConverter] convertNumber:[NSNumber numberWithInt:100]
														         fromUnit:DDVelocityUnitMilesPerHour
														           toUnit:DDVelocityUnitFurlongsPerMicrofortnight];

Precision

DDUnitConverter does all its transformations using NSDecimalNumber, so your precision is limited to anything NSDecimalNumber can handle.

Converters

DDUnitConverter has converters for the following categories:

  • Acceleration
  • Angle
  • Area
  • Bytes
  • Currency (pulls rates from the International Monetary Fund)
  • Current
  • Energy
  • Force
  • Illumination
  • Inductance
  • Length
  • Magnitude
  • Mass
  • Power
  • Pressure
  • Radiation
  • Temperature
  • Time
  • Torque
  • Velocity
  • Volume

If you want more categories, more units, or have found a bug with the conversions, please file an issue.

Compatibility

  • Requires Mac OS X 10.6+
  • Requires iOS 4.0+

License

Copyright (c) 2010 Dave DeLong

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.