Anyone who has used my sock patterns will know that I think it’s important to make sure your socks fit properly, and the only real way to do that is to use a little bit of maths. I’ve always tried to make it as easy as possible, but I know that some people have still struggled – I get it, some people just have a blind spot about numbers.

A kind friend, who has insisted I don’t name her, gave me a spreadsheet she’d created for herself that helped decide where to start the gussets, which is really the hardest part. With her blessing, I have tweaked it a little and now it is available for you to use.