Software for RISC OS


Converts between various units such as SI and Imperial

What is UnitConv?

This application converts between various units, generally SI and Imperial, but there are also some more specialised conversions, such as energy equivalents. Also included are some other converters, such as a bin/oct/hex/dec converter, a gas molecule speed calculator and an image size reckoner.

UnitConv is 26/32-bit neutral and should be compatible with all versions of RISC OS from 3 to 6.

armv7ok.png - 1014 bytesUnitConv has been tested successfully on the Iyonix, the BeagleBoard, the PandaBoard, the IGEPv5 based RapidO Ig, and the iMX6.


You can download the UnitConv application (complete with in app help file, in html format) as a zip file.

Download UnitConv, Version: 2.37 (29 Jan 2019), Zip file size: 367 KB

Source code

The source code to UnitConv is now provided. This is supplied in a format that should compile with the Norcroft DDE. It must be linked with the OSLib library, the OSLibSupport library, and the CJLib support library.

Download UnitConv source code, Version: 2.37 (29 Jan 2019), Zip file size: 71 KB

Download CJLib prebuilt and with source code, Zip file size: 57 KB

The OSLib and OSLib Support libraries can be downloaded from

Recent changes

Changes in 2.37

Changes in 2.36

Changes in 2.35


All communication about UnitConv should be directed to Chris Johnson ( ). Suggestions for new features are always welcome.