Ring Sizing Guide

Ring Size Chart

British & Australian	US & Canada	French / Pandora	Inside Circumference (mm)	Inside Diameter (mm)
F	3	44	44.2	14.1
G	3 1/2	45 1/2	45.5	14.5
H	4	47	46.8	14.9
I	4 1/2	48	48.0	15.3
J	5	49	49.3	15.7
K	5 1/2	50 1/2	50.6	16.1
L	6	52	51.9	16.5
M	6 1/2	53	53.1	16.9
N	7	54 1/2	54.4	17.3
O	7 1/2	56	55.7	17.7
P	8	57	57.0	18.1
Q	8 1/2	58	58.3	18.6
R	9	59 1/2	59.5	19.0
S	9 1/2	61	60.8	19.4
T	10	62	62.1	19.8
U	10 1/2	63 1/2	63.4	20.2
V	11	65	64.6	20.6
W	11 1/2	66	65.9	21.0
Y	12	67	67.2	21.4

Measuring Ring Size with Our Printable Ring Size Chart

Finding your size at home is quick and simple with our printable ring size chart. It's an easy way to get an accurate fit before ordering, and includes a ring conversion guide across different sizing systems.

Download Printable Ring Size Chart

Print the chart at 100% scale: Make sure the page isn't resized or "fit to page." A reference line is included to confirm the chart is printed to scale in millimeters (mm).
Find a ring that fits comfortably: Choose one you already own that matches the finger where you or your loved one will wear the new ring.
Match your current ring to the circles: Place it over the printed circles until the inside edge lines up perfectly. The numbers reflect the inside diameter, which matches your ring size.
If your ring falls between sizes, choose the larger one: A slightly larger fit will feel more comfortable, especially for wider rings.

Tip: Since wider bands can feel tighter, consider going up half a size for a better fit.

How to Use Our Free Ring Sizer

If you're still unsure of your exact ring size, our free plastic ring sizer offers another accurate way to measure at home. It's reusable and can arrive within just a few days of ordering. You can request the free ring sizer by simply filling out the request form on our site, and we'll mail it to your address of choice. Once it arrives, simply slide your finger into the circle until a size feels right. We recommend trying a half size up or down to find your precise fit. The right ring size should be snug enough that the plastic ring doesn't slip off, but loose enough to slide over the knuckle.

How to Measure Ring Size with String, Paper and a Ruler

If you’re wondering how to measure ring size at home without a dedicated sizer, this simple method can help you find an accurate fit using everyday items. It's also a great way to keep a surprise when shopping for someone else—just borrow one of their rings or ask a close friend or family member for help.

View Ring Size Chart

This method requires only a piece of string, a ruler, a pen, and a small piece of paper. Follow these steps:

Wrap the 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 in millimeters (mm), then divide the number by 3.14 (pi) to find the ring's diameter.
Match your result to the closest size on the ring size chart to determine your correct ring size.

Measure Your Ring Size at Home:

Wrap string around finger.
Mark where the ends meet.
Measure the length.
Match your result.

Ring Sizing Tips

Getting the right fit isn't just about the measurement—it's about how your ring feels day to day. Use these helpful tips to ensure lasting comfort and confidence in your choice:

Use another ring as a guide: Measure the inside diameter of a ring that fits well and compare it to your ring size chart.
Check the fit: Your ring should feel snug enough not to slip off yet loose enough to slide comfortably over your knuckle.
Account for larger knuckles: If your knuckle is wider than the base of your finger, measure both and choose a size in between.
Measure at the right time: Finger size can vary with temperature and time of day. Measure at the end of the day when your fingers are slightly larger.
Measure more than once: Repeat the process three to four times to confirm accuracy.

How to Secretly Get a Ring Size

Are you planning a surprise proposal or gift? It's possible to find the right ring size without giving it away. The easiest method is to borrow one of their rings—preferably one they wear on the same finger—and use our printable ring size chart to measure it. If borrowing isn't an option, enlist the help of a close friend or relative who can subtly ask about their ring size without raising suspicion. You can also trace the inside of their ring on paper or measure it with a ruler to compare against our chart. These discreet hacks make it simple to get a perfect fit while keeping your plans secret. Be sure to check out our unique engagement ring guide to find something extraordinary for that special someone.

Which Method is Best for Finding Ring Size?

While the most accurate method for finding a ring size is a printable ring size chart, there are other at-home measuring techniques you can try. Here are a few reliable ways to find your perfect fit.

Assessing existing jewelry: Use a ring that already fits the intended finger and match it to a printable ring size chart or measure its inside diameter to find the correct size.
Measuring your finger: Wrap a string around your finger, mark where the ends meet, and measure the length with a ruler to determine your size.
Using a plastic ring sizer: A simple tool you can use at home to measure your finger directly and find an accurate size.

For extra accuracy, try more than one approach and compare results using a printable ring size chart. Keep in mind that ring size can change temporarily, so it’s best to measure more than once at different times of the day.

In the end, the best method is the one that works most comfortably and conveniently for you or the person you're surprising.

Average Ring Sizes for Women and Men

Knowing the most common ring sizes can help you confidently start your search, especially if you're buying a ring as a gift or planning a surprise proposal. Use these averages as a helpful starting point before measuring for the most accurate fit.

Women's ring sizes:

Average size: 3–9
Most purchased sizes: 5–7
Most popular size: 6

Men's ring sizes:

Average size: 6–13
Most purchased sizes: 8–10½
Most popular size: 9

If you don't see your size listed, our experts can help with special orders and custom sizing. You can also use one of our at-home methods to find the correct size.

What Happens if I Need Ring Resizing?

If you're adjusting the fit of an existing ring, professional resizing ensures it feels just as good as the day you wore it. Whether it's an engagement ring, wedding ring or fashion piece, resizing can help restore that perfect fit. Sizing a ring depends on whether the band needs to be made larger or smaller. To increase the size, a jeweler carefully adds a small piece of matching metal, solders it into place and polishes the band to a seamless finish. To make the ring smaller, a tiny section of the band is removed, then reshaped and refinished to restore its original appearance. Our expert jewelry makers at Rag Gems NY follow strict quality standards throughout the entire process. After resizing, each ring is cleaned and polished to ensure a flawless finish and comfortable fit.

What If I Order the Wrong Ring Size?

Don't worry if your new ring doesn't fit quite right—it happens more often than you'd think. The first step is to try the ring on a few times throughout the day, since finger size can shift slightly from temperature change and activity. If it still feels too loose or snug, we'll guide you through the best next steps. At Rag Gems NY, we offer complimentary resizing for most engagement rings and wedding rings within the manufacturer's recommended range during the first year. You can also take advantage of our 30-day exchange policy if you need a different ring size.

Rings That Can't Be Resized

Certain ring styles cannot be resized due to their design. In these cases, an icon will appear on the product detail page under the ring size 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. We're happy to exchange your ring for another in the correct size within 30 days of purchase. It's important to note that should you opt for an exchange, your new ring may contain fewer or more gemstones, diamonds or a different precious metal weight, which may cause an increase or decrease in the price.

Frequently Asked Questions

Is it better for a ring to be loose or tight?

A ring should fit comfortably, where it's snug enough to stay in place yet loose enough to slide over the knuckle with ease. If it spins or slips off, it's too loose. But if it leaves a mark or is too difficult to remove, it's too tight.

What are common ring size mistakes?

The most common ring size mistakes include measuring when your hands are cold and guessing instead of using a proper sizing tool. Another frequent mistake is choosing a size that feels perfect in the moment, since finger sizes change slightly throughout the day.

Does band thickness affect ring size?

Yes, band thickness can affect your ring size. The more a ring covers your finger, the tighter it will fit. Stacking many ring types, such as with a wedding ring set, can also increase the ring size you'll need. We recommend measuring your ring size with a sizer that's close to the thickness of the ring you'll be wearing.

What is the average ring size for a woman?

The average woman's ring typically falls between size 5 and size 7, which equals an inside diameter of about 15.7mm to 17.3mm. We offer women's rings in sizes 3 through 9 with custom options to accommodate all sizes.

What is the average ring size for a man?

The average men's ring typically ranges from size 8 to 10, or an inside diameter of about 18.1mm to 19.8mm. We carry men's rings in sizes 3 through 13 with custom options for sizing available to fit additional sizes.

Can I measure a ring I already own to find out my ring size?

Yes. You can measure the inside diameter of a ring you already own and compare it to the corresponding size on the printable ring size chart. Simply place your ring directly over the circles on the guide to find the one that matches most closely.

How do you determine ring size secretly

An easy way to find your partner's ring size without them knowing is by asking their friends or family. You can also discreetly measure a ring your partner already wears and compare it to the printable ring size chart.