This opens a tool showing all of the characters for every font on your computer.
Go to ‘insert’ / ‘symbol’ / ‘more symbols’. If you want to insert a ‘proper’ minus sign in Word, here’s how: To look closely at the differences, use ‘Ctrl’ and spin your mouse wheel to zoom in/out on most browsers, or just zoom in with your fingers on a tablet. Unicode (the standard for electronically encoding text information) has separate codes for the minus sign, hyphen and N-dash. A reader asked about the difference between a minus symbol and an N-dash (thanks Tem).