I want to change the formatting to imperial from metric. How do I do that?

Please delete all duplicates of this question. Thanks in advance …

You need to be much more precise.

There are some related settings for the user interface. But. assuming you have set your interface and your locale to en(USA), these should be by default as you like them.

If the question is about numeric contents or results in spreadsheet cells you need to convert them explicitly. It is not a question of formatting.

how do you change from metric to imperial?

You don’t. It’s the other way around. The use of imperial measures must be abandoned. Now!

On a more serious note:

how do you convert measures from metric to imperial?

That depends on the measure. You can multiply/divide a certain coefficient, or use the convert_add function.

I want to change the formatting …

That makes sense.

There is no builtin formatting for all the subdividing units in imperial measures, so if you want e.g. to lay out a number of pounds in stone/lb/oz/pwt, you have to calculate the individual numbers yourself and put them together to a display value. Generally, you do this by taking the integer quotient and continue calculating on the remainder.