Granit Engineering Hardness Converter ( http://www.graniteng.com/index_eng.php ) is a mechanical and metallurgical design application which performs conversions between different scales of surface hardness and tensile strength Rm.

It's the free offline version for Android (3.0 and later) of the well known online tool available at:
http://www.graniteng.com > Tools > Hardness Converter
Direct link: http://www.graniteng.com/tool_eng.php?subcontext=hardness_converter

Available scales:

- HV 30 kg
- HK 500 g load and greater
- HRC 150 kg brale indenter
- HR15N 15 kg load
- HR30N 30 kg load
- HR45N 45 kg load
- HB 3000 kg 10 mm standard ball
- HB 3000 kg 10 mm tungsten carbide ball
- Rm [N/mm²]


Very quick and easy to use it's currently available in English and Italian.