Oppso Unit Converter (oppso-unit-converter) free WordPress plugin

Simple to use Unit Converter Plugin for WordPress. It displays both in Metric and Imperial units. For the time, you can use the following categories:

Length / Distance Converter
Temperature Converter
Time Converter
Weight Converter
Area Converter
Speed Converter

The plugin creates a shortcode so you can display these converters either in posts / pages or inside a sidebar within a text widget.

New features in version 1.1.1

• Fixed working with jQuery 1.9+