Sizing Guide
Press-On Nail Sizing Guide
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, breaks the bond, and lifts by day three.
This guide walks through two measuring methods, the size chart that actually fits, and what to do when you're between sizes. Five minutes once, and every future Handora order just works.
2 Ways to Measure Your Nails Accurately
Method 1: Paper Strip + Ruler (Most Accurate)
- Cut a paper strip about 1 cm wide
- Wrap the strip across the widest part of your natural nail (one-third up from cuticle, NOT at the tip)
- Mark where the strip meets the other side with a pencil
- Lay the strip flat against a ruler, measure in millimeters
- Record the number for each finger
Most people are surprised that their fingers aren't symmetric. Your thumb and ring are often very different sizes.
Method 2: Flexible Measuring Tape
Faster, slightly less accurate. Use cloth or plastic tape. Hold across the widest part following the natural curve. Do not flatten the curve — tape should hug the convex shape. Read in millimeters.
Size Chart (XS, S, M, L)
Handora uses 12+ sizes per nail position across XS, S, M, L presets:
- XS: 8–10 mm width
- S: 10–12 mm width
- M: 12–14 mm width
- L: 14–16 mm width
If your measurements skew outside 8–16 mm or you have unusual asymmetry, use our custom press-on order for a sized-to-you set.
Per-Finger Averages (Most People Don't Realize)
- Thumb: 14–18 mm (usually largest)
- Index: 12–15 mm
- Middle: 11–14 mm
- Ring: 10–13 mm
- Pinky: 8–11 mm (usually smallest)
Common assumption: fingers gradually get smaller. Reality: most people have a wide thumb, slightly narrower index, intermediate middle and ring, much narrower pinky.
Common Sizing Mistakes
Flattening the curve. Undermeasures by 1–2 mm. Always measure with tape hugging the natural nail curve.
Measuring at the tip. Widest point is one-third up from cuticle, not at the free edge.
Ignoring asymmetry. Left vs right hand. Thumb vs pinky. Measure each finger individually.
Choosing by 'feel.' Drugstore memory isn't accurate for craft brands. Measure fresh.
What If You're Between Sizes?
Always go down. A slightly smaller press-on flexes onto the nail and conforms. An oversized press-on creates a side gap and lifts.
If a size is 1 mm too small, you can file the side wall of the press-on slightly with a fine-grit file before applying. 30-second adjustment, perfect fit.
When to Order Custom Sizing
Custom is free at Handora. Order custom if any apply:
- Nail beds under 8 mm or over 16 mm at widest point
- Wide thumbs and narrow pinkies (4+ mm difference)
- An injured or differently shaped finger
- Wedding or photoshoot set where fit needs to be perfect
Request a custom sized set at checkout. Add measurements to order notes. 1-2 week studio turnaround.
FAQ
Why do my press-ons keep lifting?
Nine times out of ten: oversized. Re-measure with paper strip method, try one size smaller.
Can I file down a size?
Yes, slightly. 0.5–1 mm reduction with fine-grit file before application.
Do I need a custom set?
Only if outside standard 8–16 mm range or unusual asymmetry.
What if my size isn't right?
We offer a 30-day free, no-hassle return & exchange policy. As long as the nails are in their original condition, we'll swap or refund. See return policy.
Ready to Find Your Fit?
Five minutes measuring. Right fit lasts every wear after. Browse the full handmade press-on collection. Or read our blog deep-dive at press-on nail sizing guide.
Questions? Email cs@handoranails.com — a real nail artist replies within 24 hours.
