Education 2 min read

How to Size Your Ring

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The Mine & Grown free ring sizer and size chart ensure you get the perfect fit, first time, every time.

We craft every ring in standard US sizes to make things simple. If you use the chart below, you’ll see how US sizes map to finger circumference and how they convert to other international sizes. Whether it’s a wedding band, engagement ring, or a fashionable ring, they all follow this simple size format. 

Use Our Free Ring Sizer

Use Our Free Ring Sizer

We believe finding the perfect ring size should be as simple as clicking a button. This is why we’ll send you a free reusable unisex ring sizer when you are ready. 

Simply wrap the sizer around your finger, adjust until you feel comfortable with the fit, and note down the size. Once you find the perfect size, you’ll feel like it’s never going to slip off, but you’ll be able to easily slide it over your knuckle when it’s time to take it off.

Ring Size Chart

Inside circumference is the measurement that matters — match it to your local size below.

US / Canada / MexicoUK / Australia / Ireland / NZ / South AfricaFranceGermany / Russia / Ukraine / AsiaIndia / China / Japan / S. America / Turkey / IsraelItaly / Spain / Netherlands / SwitzerlandInside circumference (in)Inside circumference (mm)
3F4414441.7444.2
3.25F 1/24514 1/4---4 5/81.7744.8
3.5G45.514 1/255 1/41.7945.5
3.75G 1/24614 3/465 7/81.8246.1
4H471576 1/21.8446.8
4.25H 1/247.5------7 1/81.8747.4
4.5I4815 1/487 3/41.8948
4.75J48.515 1/2---8 3/81.9248.7
5J 1/24915 3/4991.9449.3
5.25K5016---9 5/81.9750
5.5K 1/250.516 1/41010 1/41.9950.6
5.75L51---1110 7/82.0251.2
6L 1/25216 1/21211 1/22.0451.9
6.25M52.516 3/4---12 1/82.0752.5
6.5M 1/253171312 3/42.0953.1
6.75N54------13 3/82.1253.8
7N 1/254.517 1/414142.1454.4
7.25O5517 1/2---14 5/82.1755.1
7.5O 1/25617 3/41515 1/42.1955.7
7.75P56.518---15 7/82.2256.3
8P 1/257---1616 1/22.2457
8.25Q5818 1/4---17 1/82.2757.6
8.5Q 1/258.518 1/21717 3/42.2958.3
8.75R5918 3/4---18 3/82.3258.9
9R 1/2601918192.3459.5
9.25S60.519 1/4---19 5/82.3760.2
9.5S 1/26119 1/21920 1/42.3960.8
9.75T61.5------20 7/82.4261.4
10T 1/26219 3/42021 1/22.4462.1
10.25U63202122 1/82.4762.7
10.5U 1/263.5---2222 3/42.4963.4
10.75V6420 1/2---23 3/82.5264
11V 1/26520 3/423242.5464.6
11.25W65.5------24 5/82.5765.3
11.5W 1/266212425 1/42.5965.9
11.75X6721 1/4---25 7/82.6266.6
12X 1/267.521 1/22526 1/22.6567.2
12.25Y68------27 1/82.6767.8
12.5Z6921 3/42627 3/42.7068.5
12.75Z 1/269.5------28 3/82.7269.1
13---702227292.7569.7
How to Measure Ring Size at Home

How to Measure Ring Size at Home

You will need:

  • Some string, dental floss, or a thin strip of paper
  • A permanent marker pen and a ruler

Steps:

  1. Cut your piece of string (or equivalent material) so that it is no shorter than three inches.
  2. Take one end and wrap it around the base of the finger you want to measure.
  3. Use your pen to mark where the end of the string overlaps with the rest of the string. 
  4. Flatten the string and measure the distance between the end and the mark, noting it down in mm. 
  5. Use our Ring Size Conversion Chart (above) to turn the length in mm into a corresponding ring size. 

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Ring Size FAQ

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How do I get a free ring sizer?

Request one with the form above and we will ship a physical sizer directly to your door.

How long do I have to confirm my size?

Please email your confirmed size within 7 days of receiving your sizer so we can commit your metals and stones to production. If we don’t hear from you within 7 days of sizer delivery, we proceed with a standard US Size 6 to keep your order on schedule.

What if my ring doesn’t fit?

We offer a complimentary fit adjustment for engagement rings (up to 1.5 sizes), including insured shipping for US, UK, EU, and UAE clients. For wedding bands and our standard collections, resizing is available for a service fee, and customers are responsible for shipping costs.

Due to their artisanal construction and continuous stone setting, eternity bands cannot be resized, so we recommend extra precision when measuring.

What if my size isn’t listed online?

While we offer standard sizes, we can accommodate almost any request through our bespoke service. Reach out to collaborate on a tailored fit.

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