Before you print
Set the printer to 100% scale or actual size. After printing, check the calibration line with a ruler. If the line is off by even 1 mm, the size recommendation may be wrong.
How to use a paper strip sizer
Cut the strip carefully, wrap it around the finger, and pull until snug but not tight. The paper should pass over the knuckle without tearing or compressing the finger.
How to use printed ring circles
Place an existing ring over the circles and match the inside edge of the ring to the circle. Do not match the outside edge or the metal thickness.
Common printable sizer mistakes
The most common mistakes are printer scaling, cutting inside the line, using stretchy paper, and measuring cold or swollen fingers. Confirm with the ring size calculator if possible.
When a phone app is easier
If you cannot print accurately, use the free Ring Sizer app to measure on your iPhone screen and compare with the chart afterward.
Frequently asked questions
Can I trust a printable ring sizer?
Yes, if the printout is calibrated at 100% scale and checked against a real ruler before use.
What printer setting should I use?
Use actual size or 100% scale. Do not use fit to page, shrink to printable area, or automatic scaling.
What if I do not have a printer?
Use the phone-based Ring Sizer app, the ring size calculator, or measure circumference with string and a ruler.
