Click for metrics will convert for you imperial units found on page to metric ones. You can choose a conversion method in add-on's settings: - conversion upon add-on's icon click - converting automatically on all pages You can also choose the details of the look of converted units (e. g. color of affected units). It supports: - units used in recipes (fl oz, cups, oz, ...) - distance units (inch, foot, mile, yard) - temperature (F -> C) - speed (mph -> km/h) This add-on can read mixed numbers (e.g. 2 1/2) and fractions (e.g. 1/4). It is also prepared for special cases like: dimensional type (1 x 1 inch -> 2.54 x 2.54cm) or interval (1 - 2 fl oz -> 29.57 - 59.15ml). More units are coming on in next releases. Feedback is always welcome, please contact me on: marcin.krezolek@mail.ch Icon for this add-on (owl with calculator) has been prepared by @0Sue3 Twitter: twitter.com/0Sue3