Why Sizing Matters More Than You Think
Sizing is the single biggest reason a press-on set fails. Not the glue, not the artwork, not the brand. Sizing. A press-on half a millimeter too wide creates a side gap that traps water and lifts by day three.

3 Ways to Measure Your Nails Accurately
Method 1: Paper Strip + Ruler (Most Accurate)
- Cut a paper strip ~1cm wide
- Wrap across the widest part of your nail (one-third up from cuticle, NOT at the tip)
- Mark and measure in millimeters
- Record for each finger
Most people aren't symmetric — thumb and ring often differ significantly.
Method 2: Flexible Measuring Tape
Use cloth or plastic tape. Don't flatten the curve — tape should hug the natural shape.
Method 3: Free Sizing Kit (Recommended)

Order with sizing kit. Lay 10 sample tips, place each against your natural nail. Find flush fit. Reusable for future orders.
Size Chart (XS, S, M, L)
- XS: 8–10 mm
- S: 10–12 mm
- M: 12–14 mm
- L: 14–16 mm
Outside 8–16 mm? Use custom press-on order.

Common Sizing Mistakes
Flattening the curve. Undermeasures by 1-2mm. Measuring at the tip. Widest is one-third up. Ignoring asymmetry. Hands aren't symmetric. Choosing by 'feel.' Measure fresh.
Between Sizes?
Always go down. Snug flex-fits. Oversized pops.
Per-Finger Averages
- Thumb: 14–18 mm
- Index: 12–15 mm
- Middle: 11–14 mm
- Ring: 10–13 mm
- Pinky: 8–11 mm
FAQ
Why do my press-ons keep lifting?
9/10 times: oversized. Re-measure with paper strip, go one size smaller.
Can I file down a size?
Slightly. 0.5–1 mm reduction with fine-grit file.
Do I need a custom set?
Only if outside 8–16 mm range or unusual asymmetry.
Ready to Find Your Fit?
5 minutes measuring. Right fit lasts every wear after. Start with our complete sizing guide page, or jump to handmade press-on collection — every order ships with free sizing kit.
Related Reading
- Shop handmade press-on collection
- How to apply press-on nails to last 4 weeks
- How to remove press-on nails safely
- Hand-painted vs printed press-on nails
- How long do press-on nails last?
- 25 French tip press-on designs
- Press-on nail glue: the complete guide
- Custom press-on commissions
- Care & reuse guide
- FAQ