2. Measure the widest part of your nail bed by placing a measuring tape along the natural curve, from one side to the other.
3. Write down the measurement and repeat for each nail.
1. Stick a piece of transparent tape across the widest part of your natural nail.
2. Mark the edges of your nail on the tape.
3. Carefully peel the tape off and place it flat next to a ruler. Measure the distance between the two marks. Write down the measurement for each finger.
