Find your size
Millimeters never lie.
Size numbers aren’t standardized between brands — a “size 3” from a drugstore kit can be a whole different width here. That’s why we fit you in millimeters, finger by finger. Measure once, and every future order is easy.
Your numbers stay on this page only — nothing is saved or sent anywhere. Finish and copy your summary before you close the tab.
How to measure
Pick your tool
Soft tape measure: lay it across the nail. No tape measure? Press a strip of clear tape over the nail, mark both sidewalls with a pen, peel it off and measure between the marks with a ruler.
Widest point, sidewall to sidewall
Measure across the widest part of the nail, from where the nail meets skin on one side to the other.
Follow the curve
Let the tape hug the natural curve of your nail — don’t flatten it across the top. The curve is part of the width.
Measure all ten
Left and right hands often differ — measure both. Tap any nail to jump to it.
Your size summary
Copy this into the order notes at Square checkout (or send it with a custom request).
Our size numbers
These are our sizes — other brands number differently, so always trust the millimeters over a size number you know from somewhere else.
| Our size | Width |
|---|
No tape measure? Print the chart.
Print our true-scale chart and hold your nail against the bars. It has a built-in calibration ruler so you can check your printer didn’t shrink it.
- In the print dialog, set Scale: 100% (sometimes called “Actual size”). Turn off “Fit to page”.
- After printing, measure the calibration bar — it must be exactly 10 cm. No ruler handy? A standard bank card is 85.6 mm wide — it should fall just short of the 90 mm mark.
- If the bar measures wrong, your printer scaled the page — reprint at 100%.