Jewelry tools
Printable ring sizer
Print it, cut it, measure your finger in a minute. No sign-up, no waiting for a sizer in the post.
Two methods on one sheet
The wrap-around strip works when you have no ring at all. The circle chart works when you have a ring that fits well. Use both if you can and compare, because each errs in a different direction.
AEJaCA printable ring sizeraejaca.com/toolsjewelry/ring-sizer
1. Check the print scale
Lay a payment card on the rectangle. It has to cover it exactly.
Or use a ruler: this line is exactly 100 mm long.
2. Cut the strip and measure your finger
- Cut along the outline and cut the slot open.
- Wrap the strip around your finger, numbers facing out, and thread the tip through the slot.
- Tighten so it slides over the knuckle but does not spin loosely.
- Read the number at the edge of the slot. That is your EU size.
When to measure so you get it right
- Measure in the evening. Fingers are up to half a size slimmer in the morning.
- Do not measure after exercise, in the heat or when cold. The swing reaches a full size.
- Measure the finger the ring is for. Left and right hands differ by about half a size.
- A wide band (over 6 mm) sits tighter. Go half a size up.
- Large knuckle: measure the knuckle and the base, then pick a value in between.
3. Or measure a ring that already fitsaejaca.com/toolsjewelry/ring-sizer
Place the ring over a circle so its inner edge matches the line. Check the neighbouring circles too, since one size is a third of a millimetre.
