Foot Nail Size Measurement Chart

Gently encircle the nail piece with a soft ruler and measure the widest part of the curvature. If you don't possess a soft ruler, you can wrap paper around the nail, make a mark, and subsequently measure it using a standard ruler.

SIZE	Thumb	Index	Middle	Ring	Little
S	17mm	10mm	9mm	8mm	7mm
M	18.5mm	11mm	10mm	9mm	8mm
L	20mm	12mm	11mm	10mm	9mm

PS: lf the measurement is 11.5mm, please treat it as 12mm.