How-To Guides

How to measure the size of your ring at home ?

Shreya Matta

Shreya Matta

December 07, 2022

Since the advent of online shopping, we rarely need to leave the comfort of our own homes to run errands, exercise or get food. The same should be true when it comes to measuring our ring sizes before ordering from the best jewelry stores or hinting to a partner about gorgeous engagement rings you’ve had your eye on.

According to New York City’s Catbird, a popular fine jewelry store in Brooklyn, “Your ring should fit your finger comfortably—snug enough so that it will not fall off, but loose enough to slide over your knuckle with some resistance.”

Ring Size Guide

U.S. ring sizes follow a scale of numbers (and half numbers), typically from ring size 3 to 13.5 for adults. Those units match your finger’s width in millimeters: A ring size 3 fits a ring finger (or any finger) that is 14 millimeters across, and the sizes climb from there. The average ring size for women is between 5 and 7, but it’s always best to get an exact ring measurement before spending a lot of money—an engagement ring isn’t cheap.


1. What is the average finger ring size for a man in India? 

For men, the average Indian ring size is between 17 and 22. 

 2. What is the average finger ring size for a woman in India? 

For women, the average Indian ring size is between 9 and 14. 

3. How to measure finger ring size in centimeters? 

Wondering how to measure finger ring size in cm (centimeter)? First, find your finger ring size chart in mm using the guide provided by Pure Pearls, then divide the measurement by 10. 

Best Practices for Finding Your Size

Consider your knuckle: If you know your knuckle is on the larger side, order half a size bigger than what your finger alone indicates, otherwise you won’t be able to slide a ring into the right place.
Ensure accuracy with multiple tries: Catbird’s site recommends measuring your finger three to four different times because the size fluctuates depending on temperature: It can be smaller the colder you are and more swollen if you’re overheated.

Measure a Ring You Already Have

If you have a ring that already fits your finger well, you can use a ruler to measure the inside diameter of this ring:

  • Take your ruler and measure straight across the inside of the ring from edge to edge.
  • Take the diameter measurement in millimeters, and then use our measurement-conversion chart to find your ring size.
  • Print Out Our Paper Ring Sizer

You can also print out our ring sizer from your computer at home:

  • When printing the guide, make sure your print scale is set to 100 percent.
  • Make sure the “fit to page” box is left unchecked in order to get an accurate measurement from the printout.
  • Place the ring on the circles of this easy-to-use Ring Sizing Guide until you find the size that matches, or cut out the pre-measured strip of paper and use it to measure your finger.

Measurement Methods

Below are three common (and easy) ways to measure your ring size at home—using string, a size chart, and a ring sizer—so you can get the right piece of jewelry.

A Guide for How to Measure Your Ring Size at HomeUsing Our Free Ring Sizer

Our free plastic ring sizer makes determines the size of a ring. Simply slide your finger into the sizer until you find a size that feels right. We recommend trying a half size up and half size down as well to find your precise fit. The right size should be snug enough so the plastic ring won’t fall off but loose enough to slide over the knuckle.

Find a ring that fits you well. Print out a true-to-size ring size chart, and place it on the circles until you find the one that matches up with the inside circumference of your ring.

Buy your own ring sizer

For the most accurate measurement, you can purchase your own ring-measurement tool. They don’t tend to be expensive, and there are many options online. Ring-sizing tools fall into two categories: a thin measuring tape or a keyring lined with a gradient of ring sizes. Plus, you can keep these on hand to measure when you’re shopping for rings for other people in your family, too.

Measuring Ring Size With Our Printable Size Chart

If you’re looking to measure a ring size in a hurry, our printable ring sizer is the perfect tool to help. Simply print out the guide and place a ring the wearer already owns over the circles, matching the inside of the ring to the circle nearest in size. If it is between two circle sizes, choose the larger size. Our printable guide also includes a ring size chart online with precise diameter measurements and their corresponding sizes along with international ring sizes. With our online sizer, you’ll quickly find out the right size.

Measuring Ring Size With String, Paper & Ruler

Measurement tool and ring size chart for men and women

If you’re shopping for someone else, the best way to find his or her ring size is to ask. If you’re planning a surprise, get help from friends and family. They can ask without raising any eyebrows. The average size available for women ranges from size 3 to size 9.

The most commonly purchased women’s rings range between size 5 and size 7. Size 6 is the most popular. The average ring size available for men ranges from size 6 to size 13. The most commonly purchased men’s rings range between size 8 to 10-½. Size 9 is the most popular.

These standard sizes can help guide you in the right direction. If you do not see the size you need, contact our experts for help placing a special order. There are also a number of at-home methods to find your ring size.

  • Start by cutting out a strip of paper that is approximately 3/4-inch wide and 4 inches long.
  • Wrap the paper around the base of the intended finger, and then mark where the paper overlaps. The length of the paper you measured in millimeters is the circumference of your finger.
  • After finding this measurement, use our conversion chart to find the corresponding size.
  • If the measure of your finger below the knuckle drastically differs in size from the knuckle itself, measure your knuckle as well. Then, choose a size that falls more in the middle of these two measurements.

Using a string or floss to measure your finger

How to measure ring size at home - string method for men and women

  • Take a length of floss or string and wrap it around the base of your finger.
  • Mark where the floss or string first overlaps with a pen.
  • Stretch the length of the string out along a ruler or measuring tape, and take down the length in millimeters.
  • Use the size chart below to compare your measurement to the standard ring sizes, which go up by 0.4 millimeters for every half-size. For instance, a size 3 ring is 14 mm, a size 3.5 ring is 14.4 mm, and a size 4 is 14.8mm.
  • The most common ring sizes for women are 6 (16.5 mm), 6.5 (16.9mm), and 7 (17.3 mm), while the most common men’s sizes are 10 (19.8mm), 10.5 (20.2 mm), and 11 (20.6 mm).

Pro Tip: String and floss can stretch, so don’t pull them too taut. If you do, your measured ring finger size may be larger than your finger and any rings you purchase may be too big.

Measure Your Ring With These Steps:

  • Wrap string or paper around the base of your finger.
  • Mark the point where the ends meet with a pen.
  • Measure the string or paper with a ruler (mm) then divide by 3.14 (or Pi) to get the diameter of the ring.
  • Pick the closest measurement on the ring size chart to find your size.

More Ring Sizing Tips:

  • Measure the inside of another one that fits using a tape measure and our printable ring sizer.
  • The ring should fit your finger comfortably: snug enough so it won’t fall off, but loose enough to slide over your knuckle with relative ease.
  • When the knuckle is bigger than the base of the finger, measure both places and pick a size in between the two.
  • Measure your ring size at the end of the day when your fingers are warm. Finger size changes depending on the time of day and the weather, and your fingers are actually smaller in the early morning and in cold weather. Also,
  • keep in mind that the fingers on your dominant hand are usually larger.
  • Measure 3 to 4 times for more accuracy.

What Happens When My Ring Is Resized?

To make sure you get the best possible fit, the ring resizing process requires adding or removing small amounts of metal depending on the difference between the size purchased and the new size requested. As a result, it may be slightly thicker or thinner after resizing. These tiny changes are often visually imperceptible.

What If I Order The Wrong Ring Size?

Don’t let the question of size stress you out. Blue Nile provides complimentary resizing for most engagement rings and wedding bands within the manufacturer’s recommended sizing range, during the first year. If you need a different ring, we offer a 30-day exchange policy for your convenience.

Rings That Can’t Be Resized

Some of our ring styles cannot be resized due to their design. In these cases, an cannot be resized icon will appear on the product detail page under the ring selection. For example, diamond and gemstone eternity rings with a specific number of gemstones per finger size, milgrain or ornate bands, silver rings, or rings with alternative metals such as Tungsten cannot be resized.

Indian Ring Size Chart

In India, ring sizes are typically measured in millimeters or centimeters. The Indian ring size chart in cm is based on the circumference of your finger, which can be easily measured using a tape measure or a string. Simply wrap the measuring tool around your finger and note down the measurement to find your ideal ring size.

It’s important to keep in mind that different brands may have slight variations in their sizing standards, so it’s always best to refer to a specific brand’s sizing guide before making any purchases. To find your ring size in centimeters (cm) using an Indian ring size chart, you need to measure the circumference of your finger in millimeters. It can be done using a measuring tape or string and then compare it with the table provided on the chart.

When you visit the Jewelry store  you can request for ring size measurement. You can browse for the ring size chart india in cm and get the actual size. When you order the ring, get the next bigger size and have an ring adjuster.  Men or women typically post marriage the ring size may change.

How to measure Ring Size with Tape Measure?

  • First, wrap the tape measure around the base of your finger where you plan to wear the ring. Make sure it is snug but not too tight.
  • Take note of the measurement in millimeters. If the measurement falls between two numbers, round it up to the nearest whole number.
  • Next, use a ring size chart to find your ring size. These charts typically have the corresponding ring sizes for each measurement in millimeters.
  • Match your measurement to the closest ring size on the chart. Keep in mind that different countries may have slightly different ring size standards, so be sure to use a chart that corresponds to your country’s sizing system.
  • If you don’t have a ring size chart, you can also take your measurement to a jeweler who can help determine your ring size accurately.
  • Remember that factors like weather, time of day, and temperature can affect the size of your fingers, so it’s always a good idea to measure your ring size multiple times to get a more accurate result.

Final Thoughts

In conclusion, measuring the size of your ring at home is not as hard as it may seem. With a few simple tools and just a few steps, you can accurately measure the size of your finger and determine the perfect ring size for yourself. Remember, this doesn’t have to be an exact science – if you’re still unsure about what size to get, it’s often best to err on the side of caution. Ask a professional such as your local jeweler for assistance if needed.

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