Article / Updated 03-26-2016
The Table of Joy is a handy tool for working out percentages, ratios, conversions and much else besides! Here’s an example how you can use it to convert 300 miles into kilometres, using the fact that 5 miles is roughly 8 kilometres:
Draw out a big noughts and crosses style grid.
Leave the top-left square blank and label the rest of the top row with the things you’re converting: in this case, miles and kilometres.