How to convert a single coordinate from one CRS to another

There can be various situations where you would like to convert a coordinate from one CRS to another. The Template:Platform contains many methods to do this. However, sometimes a user needs to do a conversion in other software. This How-to decribes methods how you can convert a coordinate from one CRS to another.

Situations where you would need to convert a coordinate to an other CRS:

• How to set the Geo-location of a DXF