Size studio
Find your fit with a coin
No sizing kit needed. A coin in the photo tells us the scale, and your photo never leaves your phone. Two minutes, both hands.
- Pick your coin and lay it flat on a table next to your hand.
- Hand flat, fingers relaxed, phone straight above (not tilted). Take the photo.
- Fit the circle to the coin, then drag a line across the widest part of each nail.
Add a photo to start. Your photo never leaves this device. Tip: natural light, no shadows on the coin.
Step 1 · Fit the circle to the coin (drag the centre, then the edge handle)
Wrap a strip of paper or tape across the widest part of the nail, mark both edges, and measure the gap with a ruler in millimetres.
Left hand
Thumb
Index
Middle
Ring
Pinky
Right hand
Thumb
Index
Middle
Ring
Pinky
| Size | Width | Thumb | Index | Middle | Ring | Pinky |
|---|---|---|---|---|---|---|
| 0 | 18 mm | ✓ | ||||
| 1 | 17 mm | ✓ | ||||
| 2 | 16 mm | ✓ | ||||
| 3 | 15 mm | ✓ | ✓ | |||
| 4 | 14 mm | ✓ | ✓ | ✓ | ✓ | |
| 5 | 13 mm | ✓ | ✓ | ✓ | ||
| 6 | 12 mm | ✓ | ✓ | ✓ | ||
| 7 | 11 mm | ✓ | ✓ | |||
| 8 | 10 mm | ✓ | ||||
| 9 | 9 mm | ✓ | ||||
| 10 | 8 mm | ✓ | ||||
| 11 | 7 mm | ✓ |
Between sizes? Go to the bigger nail (the smaller number). A slightly wide nail files down to a perfect fit. A narrow one never grows.
Your fit
Nothing measured yet| Finger | Left | Right | Typical |
|---|---|---|---|
| thumb | — | — | 14–18 mm |
| index | — | — | 11–14 mm |
| middle | — | — | 12–15 mm |
| ring | — | — | 11–14 mm |
| pinky | — | — | 7–10 mm |
Saved on this device only. It auto-attaches to every order so you never type sizes again.