Drag this Parbs Scale bookmarklet to your bookmarks bar. When you're on a page on which you'd like the measurements translated to the Parbs Scale, click on it.

You can test it out on this page, by clicking the bookmarklet above.

Example content: inch, inches, pixel, millimeter, meter, kilometer, decameter, mile, pound, teaspoon, yards, grams, furlong, bushel, peck, hogshead, liter, gallon, acre, ounce, pennyweight, giant jar of mayo.