Performance Lab
Performance plugin from the WordPress Performance Team, which is a collection of standalone performance features.
Plugin tag: measurement
WP Unit Converter
WP Unit Converter allows you to convert Length/Distance, Temperature, Time, Weight, Area and Speed metrics…
Custom Unit Converter Widget
Simple measurement converter widget.
ViuBox SYZ
Size-recommendation, fitting, and virtual try-on App for Fashion E-Commerce.
CodeArt Units Converter
online conversion calculator for many types of measurement units