A printable chart you can actually verify

How to print it correctly

1. Open the PDF and go to print (Ctrl/Cmd + P).
2. In the scale setting, choose 100%, Actual size, or None. Do not choose "Fit to page" or "Shrink to fit."
3. Print on plain paper, US Letter size.
4. Before measuring anything, hold a real ruler against the 50mm scale at the top of the page. If it doesn't read exactly 50mm, your printer rescaled it, go back and check the scale setting.

How to use it

Place a ring that already fits over each printed circle. The circle where the ring's inner edge lines up exactly with the printed line, not the outer edge of the band, is your size. Each circle is labeled with its US, UK, EU, India, Japan, and China equivalent, so you only need to find the right circle once.

Printable chart or on-screen sizer?

The on-screen sizer depends on your screen being calibrated correctly, while a printed chart only depends on your printer. If you have a ring that fits the finger you want to size, a correctly printed chart is a simple, reliable way to read its size. If you do not have a ring to compare, use the finger measuring methods in the how-to guide instead.

If the 50 mm ruler does not read 50 mm

Rescaling is the most common problem with printed charts. Work through these steps:

1. Open the PDF in a full PDF viewer such as your browser's PDF viewer or Adobe Acrobat, not in a small preview window.
2. In the print dialog, set scale to 100%, Actual size or None. Avoid Fit to page, Shrink to fit and any automatic scaling option.
3. Check for a setting such as Scale to fit paper or Fit to printable area, and turn it off.
4. Print from a computer if you can. Printing from a phone often applies scaling you cannot control.
5. Print again and re-check the ruler against a real ruler before trusting any circle.

The file is set up for US Letter paper. If you print on A4, choose Actual size and run the ruler check. If any circles are cut off, use Letter paper.

Getting an accurate reading

• Place the ring flat on the circle and look straight down, so you are not reading at an angle.
• Line up the inner edge of the ring with the printed line, not the outer edge of the band.
• Use a ring that actually fits the finger you are sizing. A loose or tight ring passes its own error on to the result.
• If the ring seems to sit between two circles, check both neighbors, and choose the larger if you are unsure.
• For a wide band, add the width adjustment. See wide band sizing.

Ink spread can make the printed lines a fraction of a millimeter thick, which can shift a reading by a small amount. If the purchase matters, confirm the result with a second method.

Printable chart questions