How to Measure Ring Size?

By Bailey Cooper

Finding the perfect ring size is key to ensuring comfort and style, but it’s not always straightforward. Whether you’re sizing for yourself or choosing a gift for someone special, there are simple methods to get the right fit. This guide will walk you through everything you need to know about measuring ring size accurately and easily.

How Do You Measure Ring Size at Home?

If you are trying to find your own ring size, simply follow these steps:

Wrap a piece of string or paper around the base of your finger.
Mark where the end meets with a pen. Measure the string or paper with a ruler (in millimetres) to get the circumference.
Divide the circumference by Pi (3.14) to calculate the diameter.
Match the measurement to a ring size chart to find the closest size.

For additional help, visit our comprehensive Ring Sizing Guide and use our printable ring sizer for precise measurements.

How to Measure Ring Size Using an Existing Ring

If you’re shopping for somebody else, the easiest way to find their ring size is to ask. However, at Bloom Boutique, we understand the importance of keeping a surprise and wouldn’t encourage a person to spoil it. Instead, try consulting with a family member or friend who might already know.

If the answer is still a mystery, you might need to get creative:

Look for an abandoned ring they no longer wear or discreetly borrow one from their jewellery box.
Once you have the ring, follow these steps:

Wrap a piece of string or paper around the inside of the ring.
Mark where the end meets with a pen.
Measure the string or paper with a ruler (in millimetres) to get the circumference.
Divide the circumference by Pi (3.14) to calculate the diameter.
Match the measurement to a ring size chart to find the closest size.

For additional tips and tools, visit our Ring Sizing Guide.

How to Use a Printable Ring Sizer

A printable ring sizer takes the guesswork out of finding the perfect fit. Here’s how to use it:

Download and print the sizer from our Ring Sizing Guide, ensuring your printer is set to 100% scale.
Cut out the sizer along the dotted lines.
Wrap it around the base of your finger, ensuring it’s snug but comfortable.
Read the size on the scale where the paper overlaps.
For best results, measure the specific finger you’ll wear the ring on and compare it to our ring size chart.

Keep these tips in mind for the best results:

Fingers change size depending on the temperature and time of day, so measure in the evening when your hands are warm for better accuracy.
Fingers on your dominant hand are slightly larger, so make sure to measure the finger where you plan to wear the ring!

How to Measure Ring Size Secretly for a Surprise Gift

Trying to keep your gift a surprise? Here are a few creative ways to measure their ring size without spoiling the moment:

Borrow a Ring: Sneak a ring they wear on the same finger and measure its size discreetly.
Ask Their Inner Circle: Friends or family members might know their size or can subtly find out for you.
Compare Rings: While shopping together, casually compare ring sizes by trying on a ring yourself and noting how it fits. Use this as a reference when choosing the size.

Surprises can be tricky, but the effort makes the moment unforgettable.

For more tips, check out our full Ring Sizing Guide.

FAQ

For women, the average ring size is M in the UK and 6.5 in the US, with a diameter of approximately 16.5 mm. For men, the average size is T in the UK and 9.5 in the US, with a diameter of around 19.8 mm.

Yes, ring sizes vary internationally. The UK uses alphabetical sizes (e.g., L, M), the US uses numbers (e.g., 6, 7), Europe measures inner circumference in millimetres (e.g., 52, 54), and Japan uses its own numerical system.

If you’re between sizes, size up for comfort, especially for wider bands. Fingers can swell due to heat or activity, and a slightly larger ring accommodates this. For resizing advice, consult a jeweller.

Measuring ring size doesn’t have to be complicated, and with these simple tips, you can confidently choose the perfect fit, whether it’s for yourself or a loved one.

Need more help? Visit our Ring Sizing Guide for detailed instructions and tools.