My family still talks in stone and friends in the US talk in pounds

Hi everyone, I'm new here. My clinic notes are always in kg, but my family still talks in stone and friends in the US talk in pounds, so I get confused following my weight week to week. When I saw a 10 kg loss I had to work out that's about 22 pounds, or 1 stone 8. How do you keep track of yours? Do you stick to one unit, or just go by how you feel?