I don't know about the 13” M1 MBP, but while they have the same height my 2014 13” MBP is 1.25” wider.Just think of the 13 inch MacBook Pro. They're basically the same size, except the iPad is thinner unless you pair it with the MK then it's thicker and just as heavy. I'm going to assume you will be using a case, so that will add to the thickness. If you feel comfortable with the 13 inch laptop size range, then you should be just fine.