Nail Sizing Guide

Find Your Perfect Fit

Getting the right size is the key to a flawless, comfortable wear. Follow the steps below to find your fit before ordering.


How to Measure at Home

You can use a soft measuring tape, or a piece of clear tape and a ruler.

  1. Measure the widest part of each nail.
  2. Record each width in millimetres (mm).
  3. Match your measurements to the size chart below.

When in doubt, size up.


Nail Size Chart

Size Width (mm)
0 13.3 mm
1 11.8 mm
2 11.0 mm
3 10.7 mm
4 10.1 mm
5 9.4 mm
6 9.4 mm
7 8.6 mm
8 8.6 mm
9 8.4 mm
10 7.2 mm
11 6.7 mm

Common Preset Sizes

Each set comes in a preset size that includes nails for your Thumb, Index, Middle, Ring, and Pinky fingers:

Kit Size Nail Sizes Included (Thumb · Index · Middle · Ring · Pinky)
XS 3, 6, 5, 7, 9
S 2, 5, 4, 6, 9
M 1, 5, 4, 6, 8
L 0, 4, 3, 5, 7

Preset sizes may vary slightly by nail shape or style. When in doubt, size up.


No Measuring Tape? Try the Coin Method

If you don't have a measuring tape at home, you can use a coin as a reference:

  1. Place a coin flat on a piece of paper and trace around it.
  2. Hold the coin (or the traced circle) up to the widest part of your nail.
  3. Compare the width of your nail to the coin diameter to estimate your size.

Common coin references:

  • Canadian dime — 17.9 mm (approx. Size 1–2 range)
  • Canadian penny / nickel — 19.1 mm / 21.2 mm (approx. Size 0 range)
  • US dime — 17.9 mm
  • US quarter — 24.3 mm (use as a ruler reference, not a nail size)

Use the coin to get a rough estimate, then cross-reference with the size chart above for the best fit.


Still not sure? Feel free to contact us — we're happy to help you find your perfect size.