measure ring size

How to Measure Ring Size: Easy and Accurate Ways

Choosing the perfect ring, whether for an engagement, wedding, or everyday wear, starts with knowing the correct size. Whether you're shopping for diamond rings from BESEEN Jewelry or a simple band, measuring your ring size accurately ensures a comfortable fit.

In this post, you'll learn how to measure ring size at home using tape, string, a ruler, paper, or calipers for the pinky, thumb, or index finger.

You'll also discover how to measure without a ring sizer, how to measure secretly, and even how to measure a nose ring size.

Why Knowing Your Ring Size is Important

A well-fitting ring is not only comfortable but also prevents loss or slipping. Ring sizes differ between men and women and across regions (US, UK, EU, and other international systems).

  • US ring sizes use numbers (e.g., 4-13 for women, 8-15 for men).
  • UK ring sizes are in letters (A-Z).
  • Some charts use mm for inner diameter or circumference.

Different Ways to Measure Ring Size at Home

1. Tape

One of the most accurate ways to measure your ring size at home is by using a flexible measuring tape.

Steps:

  1. Encircle your finger's base with the tape.
  2. Modify it so that it fits comfortably yet securely without being overly tight.
  3. Read the measurement in cm, inches, or mm.
  4. Compare it with a US or UK ring size chart.

This method is ideal for measuring engagement, wedding, and pinky ring sizes.

Explore the stunning benefits of wearing diamond and gold jewelry.

2. String or Paper

If you don’t have a measuring tape, a simple string or paper strip works, too.

Steps:

  1. Snip a narrow piece of paper or string.
  2. Wrap it around your finger.
  3. Mark where the ends meet.
  4. Measure the length using a ruler in cm, inches, or mm.
  5. Match your measurement with a US or UK size chart.

This method works for thumb, index finger, and middle finger ring sizes.

3. Ruler

If you already have a well-fitting ring, measure its diameter in mm or inches using a ruler.

Steps:

  1. Place the ring on a flat surface.
  2. Measure the inner diameter (not the outer edges).
  3. Compare with a US or UK ring size chart.

This method is great for measuring a ring size from a ring you already own.

4. Measure Online

Some websites allow you to place an existing ring on your screen to match it to a US or UK ring size guide.

Learn the best methods for how to clean diamond jewelry.

5. Calipers

Measuring Inner Diameter or Circumference
Step 1: Use the calipers to measure the inner diameter (the distance across the inside edge) or circumference of the ring (distance around the inner edge).

Step 2: Record the measurement in millimeters (mm).

Step 3: Use a ring size chart to convert measurement to a ring size.

Measure Someone’s Ring Size Secretly

If you're planning a surprise engagement or gift, here are some ways to measure ring size without them knowing:

  • Use their existing ring: Measure with a ruler or calipers.
  • Ask a friend for help: Get a close friend to find out their ring size.
  • Compare on your own fingers: See if one of their rings fits any of your fingers and measure that size.
  • Borrow a ring for a day: Take it to a jeweler for measurement.

This method is ideal for secretly measuring women’s and men’s engagement ring sizes.

Measure a Nose Ring Size

For nose rings, measure the inner diameter in mm or use a string to measure the piercing area’s circumference.

Find out the traditions and choices of which hand and finger you should wear your engagement ring on!

US vs. UK Ring Size Guide: Numbers vs. Letters

In the US, ring sizes use numbers (e.g., 4-13 for women, 8-15 for men).
In the UK, ring sizes use letters (A-Z).

Inner Diameter (mm) US Size UK Size
14.1 mm 3 F
14.9 mm 4 H
15.7 mm 5 J
16.5 mm 6 L
17.3 mm 7 N
18.1 mm 8 P
19.0 mm 9 R
19.8 mm 10 T

Tips for Accurate Measurement

  • Measure in the evening: Fingers swell throughout the day.
  • Consider bandwidth: Wide rings fit tighter; size up slightly.
  • Check multiple times: Measure at least 2-3 times for accuracy.

Find Your Perfect Ring at BESEEN Jewelry

Now that you know how to measure your ring size, explore the stunning diamond ring collection from BESEEN Jewelry. Whether you need an engagement ring, wedding band, or fashion ring, find a design that fits perfectly.

FAQs

1. How do you measure ring size in cm?

Wrap a measuring tape around your finger and note the length in cm. Compare with a US or UK size chart.

2. How to measure ring size in inches?

Use a string or paper strip to measure your finger, then convert the measurement to inches.

3. How to measure ring size without a ring sizer?

Use a string, paper, ruler, or an existing ring to determine the size.

4. Can you measure ring size with a caliper?

Yes, digital calipers provide a precise mm diameter measurement for an existing ring.

5. How to secretly measure the ring size for an engagement?

Use their existing ring, enlist a friend, or compare the ring size to one of your own fingers.

6. How do you measure pinky, thumb, and index finger ring size?

Use the same methods (tape, string, ruler) for any finger. Ring sizes vary, so measure each finger separately.

7. Can you measure a ring with your phone?
Yes, you can measure a ring with your phone using a ring size app or by comparing it to a printed ring size chart. However, for accuracy, it's best to use a professional jeweler.

8. What is the average ring size for a woman?
Around size 6 (U.S. sizing).

9. Can jewelry stores measure ring size?
Yes, most jewelry stores offer free ring sizing.

10. What time of day is best to measure ring size?
Late afternoon or evening, when fingers are slightly swollen for the most accurate fit.

11. What is the most accurate way to measure ring size?
Using a metal ring sizer at a jewelry store is the most accurate.

12. How often do rings need resizing?
Only when your finger size changes due to weight changes, pregnancy, or aging. No regular schedule.

Back to blog