The short answer
Measure, match, size up.
- Measure the widest part of each nail
- Match each width to the chart
- Between two sizes? Size up
What you need
- Clear tape
- A ruler in mm
- A fine pen
- Our size chart
Step by step: measure your 10 nails
- Stick tape across the widest part of the nail.
- Mark both side edges where the nail meets the skin.
- Peel it off, lay it on the ruler and read the mm.
- Write it down and repeat for all 10. Hands differ!
Read the chart
Size 0 is the widest (usually your thumb). Size 9 is the narrowest (usually your pinky). Check each brand's own chart too.
Between two sizes: file or size up?
Size up, then file the sides. A slightly big nail can be filed to fit; a small one can't grow. Avoid sizing down: your natural nail peeks out at the sides, and that's what gives press-ons away.
Wide or curved nail beds
- Wide nail beds: you may need a size wider than the chart says, then file the sides to match yours.
- Curved nail beds: flat press-ons lift at the sides. Pick sets with a stronger curve and hold the sides down for 30 seconds.
FAQ
Should I size up or down? Up. You can file a nail that's a bit wide, but a narrow one leaves your natural nail showing.
Are both hands the same size? Often not. Measure all 10 nails, not just one hand.
