How do I check my ring size at home?

Use string or a soft tape around the finger base, mark the overlap, and measure in millimeters. Or measure an existing ring inner diameter, or print our free ring sizer at 100% scale. Then match mm on the ring size chart or converter.

How do I measure ring size with a tape measure?

Use a soft (flexible) tape, not a metal workshop tape. Wrap it at the finger base where the ring will sit—snug, not tight. Read millimeters. If the tape only shows centimeters, multiply by 10 (5.5 cm = 55 mm) and look up circumference on the chart.

How can I find my ring size without measuring my finger?

Measure a ring that already fits that finger: place it on a ruler and read the inside diameter in mm, then look up US/UK/EU on the chart. Guessing from hand shape or shoe size is unreliable.

Is your shoe size the same as your ring size?

No. Shoe size is foot length. Ring size is finger circumference or inner diameter in mm. A US 9 shoe does not mean a US 9 ring. Measure the finger (or a ring that already fits) and use the ring chart.

My ruler shows cm—how do I get a ring size?

That reading is almost always circumference. Multiply cm by 10 to get mm (6 cm = 60 mm), then use Circumference (cm) in the converter or the cm table on the ring size chart. Do not treat 6 cm as inside diameter—adult inner diameters are about 16–22 mm.

How do I measure ring size for UK sizes?

Measure circumference or diameter in mm the same way, then read the UK letter column (for example L½, Q) on the ring size chart. UK uses letters; US uses numbers—same measurement, different label.

Do Australia ring sizes match US or UK?

Australia commonly uses the same letter scale as the UK (for example L, M, N). Measure in mm at home, then read the UK letter column on our ring size chart—do not assume US numbers equal AU letters.

When is the best time to measure ring size?

Measure when your hands are at room temperature, typically afternoon or evening. Avoid cold, swollen, or post-workout hands—finger size changes through the day.

What ring size is 7 cm?

Treat 7 cm as finger circumference: 7 cm = 70 mm. On our chart that is closest to about US 13–13¼ (around 69.7–70.4 mm / UK Z½–Z1). Do not read 7 cm as inside diameter—adult diameters are about 16–22 mm. Confirm on the ring size chart or converter.

Measure Your Ring Size at Home in Minutes

Trace or wrap the finger, note millimeters (or cm × 10), then match US, UK, or EU. A well-fitting ring's inner diameter is usually the most accurate home check.

Pick afternoon or evening at room temperature.
Wrap soft tape or string at the finger base—or print the sizer at 100%.
Read mm. If the ruler shows cm, multiply by 10 (6 cm = 60 mm).
Look up circumference or diameter on the chart or converter.

Download printable sizer Open converter

4 ways to measure at home

String or soft tape

Wrap, mark, measure mm (or cm × 10).

Existing ring

Read inner diameter in mm—most accurate at home.

Printable sizer

Free PDF—print at 100% scale.

Convert mm → size

US numbers, UK letters, EU mm labels.

How to measure ring size at home

1. Pick the right time
Measure at room temperature—usually afternoon or evening. Cold fingers run smaller; swollen or post-workout hands run larger.
2. Choose a method
String or soft tape for a new measurement; an existing ring’s inner diameter for the most accurate home result; or our printable ring size chart printed at 100% scale.
3. Measure circumference in mm
Wrap at the finger base where the ring will sit—snug, not tight. Mark the overlap, lay flat, and note length in millimeters. A household tape that only shows centimeters is still usable: multiply by 10, then look up circumference.
Or measure an existing ring
Place a well-fitting ring on a ruler and read the inside diameter in mm. Match that number on the diameter (mm) column of the ring size chart.
4. Convert to US, UK, or EU
Open the ring size converter (By Measurement) or find your mm row on the chart. UK shoppers: read the letter column (e.g. L½, Q)—same mm, different label system.
5. Double-check
Measure two or three times on different days. Wide bands (over ~6 mm) often feel tighter—consider a half size up.

How to measure ring size with a tape measure

Use a soft sewing or body tape. A stiff metal tape will not wrap the finger evenly and will read large.

Wrap at the base of the finger that will wear the ring, under the knuckle.
Keep the tape snug so it does not slide, but do not indent the skin.
Read the overlap in mm. Example: 54–55 mm is about US 7 on our chart.
If you only see cm, switch the converter to Circumference (cm) or multiply by 10.

Knuckles that are much larger than the base: size so the ring can pass the knuckle, then check it will not spin off at the base.

Next steps after you measure

Measure Your Ring Size at Home in Minutes

4 ways to measure at home

String or soft tape

Existing ring

Printable sizer

Convert mm → size

How to measure ring size at home

1. Pick the right time

2. Choose a method

3. Measure circumference in mm

Or measure an existing ring

4. Convert to US, UK, or EU

5. Double-check

How to measure ring size with a tape measure

Printable ring sizer

Ring size chart (mm)

Ring size converter

Men's ring size chart

Women's ring size chart

Measuring FAQ