How to Determine the Perfect Engagement Ring Size at Home

No matter how beautiful and expensive a ring is, it can spoil your special moments if it is not the right size. Ring sizing should never be a guessing game, especially when you are looking for an engagement or wedding ring. Here, our extensive step by step guide on how to determine the perfect ring size at home.

Let’s start with the basics: As we know that the engagement ring is worn on the third finger of the left hand (next to the little finger)

How to Measure Ring Size at Home

In the United States, ring sizes follow a scale of number (as shown in the chart below) starting from ring size 3 to 14.5 for adults. Women’s rings usually start from number 3 to 9, while men’s rings are sized between 8 and 14. But do not rely on average ring sizes. Always get the exact ring measurement before spending a lot of money.

How to Measure Your Ring Size?

Here’re some useful home methods you could try to determine ring size with and without a ring sizer.

Using a Floss/String

Take a string and cut it; make sure it’s 6 inches long. Now fold it around the base of your finger, below the knuckle. Take a pen and mark the string where it ends. Take a ruler and place the measured string with the area marked on your right. The number closest to the mark is the circumference of the floss ring in millimeters.

Please note: Floss is stretchable, and try not to put force while measuring as this would result in wrong finger size, would turn a bit larger than your finger.

Method 1 (How to Measure Ring Size)

Use A Strip Of Paper

No problem, if you don’t have floss or string at home, use a strip of paper for this work. This is one of the easiest ways to measure your ring size. All you need is to cut out a strip of paper, around ¾ inches wide and 4 inches long. Wrap that strip around the base of your finger, and mark the point where the paper overlaps. The circumference of a singer is actually the length of the paper and is measured in millimeters.

 Once you’re done with measuring, you can use a size chart to find the corresponding ring size. If you find the size of a finger below your knuckle is different in size from the knuckle itself, then advise is to measure the knuckle and choose the size that falls more in the middle of your measurements (knuckle and below knuckle).

Measure A Ring if You Already Have

You must have a ring at home. Take that ring that already fits your finger. For this, you can use a ruler and measure the inside of the ring’s diameter. It is not difficult; just use the ruler and measure straight across the ring’s inside, but from edge to edge. While using a ruler, always take measurements in millimeters and then use our measurements conversion chart to find your finger’s right size.

Print Paper Ring Sizer

No problem, if you don’t have a ring sizer at home, you can print it out from your computer. However, when printing, make sure you set the print scale to 100% and uncheck the ‘fit to page box’ option for accurate measurement. After that, place your ring on the circles of this sizing guide until you find the right matching size. You can also cut the pre-measured strip of paper and use it to measure the finger.

Buy Ring Sizer

Although the above-mentioned methods are super simple, still if you fail to manage any of those, it’s better to buy a ring sizer. Instead of trying out different rings to get a feel for the right fit, a ring sizer will bring you accurate measurements and allows you to adjust the band where it fits well on your finger, and from there, your size can be taken.

Ring Size Chart

Printable Ring Size Chart by

The average women’s ring size is 6 (diameter 16.5mm – circumference 51.9mm), and the average men’s ring size is 9.

US Ring SizeDiameter (mm)Diameter (inches)Diameter (cm)

Ring Size US to UK and EU Conversion Chart

US, UK and EU sizes comparisons, accurate to within approximately 1/4 of a finger size.

US SizeUK SizeEU Size
1 3/4C40 1/2
2 1/4D41 1/2
2 3/4E42 3/4
3 1/4F44 1/2
3 3/4G45 1/2
4 1/4H46 1/2
4 3/4I47 3/4
5 1/4J49 1/2
5 1/2K50 1/4
6L51 1/2
6 1/2M52 1/2
7 1/2O55 1/4
8P56 1/4
8 1/2Q57 1/2
8 3/4R58 1/2
9 1/2S60 1/4
9 3/4T61 1/2
10 1/4U62 1/2
10 3/4V63 3/4
11 1/4W65 1/4
11 3/4X66 1/4
12 1/4Y67 1/2
12 3/4Z68 3/4

Ring Sizing Basics

Finding a comfortable ring is a sensitive matter that cannot be ignored. You have to consider many things before ordering jewelry online because several different components impact measurement and sizing.

Environment Factors

The fingers’ size may vary during the day due to the environment and other factors, so there is no need to worry. All you need to do is measure your finger two to three times to compare the difference.

Determining ring size can be among the most complicated things of the engagement ring sizing process. According to industry expert and ring designer Taylor Lanore, many factors like environment, diet, pregnancy, and other biological changes can directly impact fingers. “Don’t be afraid if your finger changes size; that means you’re alive,” says Lanore.

Finger Shape