Custom design guidance, fine jewelry essentials, and consultant-supported decisions.

Search North Carat

What are you looking for?

RING SIZE GUIDE

Find the Size That Feels Right

A well-fitting ring should feel secure without feeling tight. Use a ring you already own or measure your finger at home, then compare your result with our size chart.

A hand wearing a delicate ring beside a millimeter ruler, paper strip and jewelry sketch on a warm ivory worktable.

METHOD ONE

Measure a Ring You Already Own

Choose a ring that fits the intended finger comfortably. Ring size can vary between fingers and between hands.

A simple ring selected as a sizing reference for the same finger and hand.

Choose the Right Ring

Select a ring that fits well on the same finger and hand where the new ring will be worn.

A ring lying flat with a millimeter ruler measuring the widest inside diameter from inner edge to inner edge.

Measure the Inside Diameter

Place the ring on a flat surface. Measure straight across the widest part of the inside opening in millimeters. Do not include the metal edges.

A ring measurement being compared with a simplified ring size chart.

Find the Closest Size

Compare the inside diameter with the chart below. If the measurement sits between two sizes, the larger size is usually the more comfortable starting point.

METHOD TWO

Measure Your Finger at Home

You will need a narrow strip of non-stretch paper, a pen and a ruler marked in millimeters.

A narrow strip of paper wrapped flat around the base of the ring finger without pulling tightly.

Wrap

Wrap the paper around the base of the finger where the ring will sit. Keep it flat against the skin without pulling too tightly.

A pen marking the exact point where the ends of a paper strip meet around the ring finger.

Mark

Mark the point where the two ends of the paper meet.

A marked paper strip laid flat against a millimeter ruler with its starting edge aligned to zero.

Measure

Lay the paper flat and measure from its starting edge to the mark in millimeters. This is your finger circumference.

A hand comparing a measured paper length with a detailed international ring size chart.

Find the Closest Size

Compare the measured circumference with the chart below and choose the closest corresponding US ring size.

Ring Size Chart

Match your measurement to the closest size below. Measurements are approximate and may vary slightly depending on the ring design and the way you prefer your ring to fit.

US Size Inside Diameter Finger Circumference
3 14.1 mm 44.2 mm
3.5 14.5 mm 45.5 mm
4 14.9 mm 46.8 mm
4.5 15.3 mm 48 mm
5 15.7 mm 49.3 mm
5.5 16.1 mm 50.6 mm
6 16.5 mm 51.9 mm
6.5 16.9 mm 53.1 mm
7 17.3 mm 54.4 mm
7.5 17.7 mm 55.7 mm
8 18.1 mm 57 mm
8.5 18.5 mm 58.3 mm
9 18.9 mm 59.5 mm
9.5 19.4 mm 60.8 mm
10 19.8 mm 62.1 mm
10.5 20.2 mm 63.4 mm
11 20.6 mm 64.6 mm
11.5 21 mm 65.9 mm
12 21.4 mm 67.2 mm
12.5 21.8 mm 68.5 mm
13 22.2 mm 69.7 mm

Before You Choose a Size

Finger size changes slightly throughout the day. A few small checks can make your measurement more reliable.

01

Measure Later in the Day

Fingers are often slightly fuller later in the day than first thing in the morning.

02

Avoid Extreme Temperatures

Cold fingers may measure smaller, while heat can temporarily make them feel larger. Measure when your hands feel at a normal, comfortable temperature.

03

Measure the Correct Hand

The same finger may not be identical on both hands. Always measure the hand where the ring will be worn.

04

Allow for the Knuckle

The ring should pass over the knuckle without excessive force while still sitting securely at the base of the finger.

05

Consider the Band Width

Wide bands and stacked rings usually feel more snug than slim bands. Depending on the design, a slightly larger size may feel more comfortable.

06

Repeat the Measurement

Measure two or three times on different occasions. If the results vary, confirm the size with a reputable local jeweler before ordering.

Three ring fit examples showing a ring that is too loose, comfortably fitted and too tight.

What Should the Right Fit Feel Like?

TOO LOOSE

The ring spins often, slides too easily, or feels at risk of slipping off during daily movement.

JUST RIGHT

The ring sits securely at the base of the finger and passes over the knuckle with gentle resistance.

TOO TIGHT

The ring feels uncomfortable, leaves a deep mark, or becomes difficult to remove from the finger.

A light temporary impression can be normal. Persistent pressure, discomfort or swelling is not.

The Design Can Change the Fit

Ring size is only part of the fit. Band width, interior shape, stone setting and stacking style can all affect how a ring feels on the hand.

Slim Bands

Slim bands generally follow your standard ring size more closely.

Wide Bands

Wider bands cover more of the finger and may feel tighter.

Stacking Rings

Several rings worn together can fit more snugly than each ring worn alone.

Open or Adjustable Styles

Open designs may allow limited flexibility, but they should not be repeatedly bent or forced.

A comparison of a slim band, wide band, stacked rings and an open ring on a warm ivory background.

SURPRISE SIZING

Choosing a Size for a Surprise?

Borrow a ring they already wear comfortably on the intended finger and measure its inside diameter. If possible, ask someone close to them to confirm the size.

A ring worn on another finger, or on the opposite hand, may not provide an accurate match.

Ring Size FAQ

What is the most accurate way to find my ring size?

Professional measurement by a reputable local jeweler is usually the most reliable option. At home, compare the inside diameter of a well-fitting ring with your finger circumference and repeat the measurement more than once.

Should I choose the larger size if I am between sizes?

The larger size is often the more comfortable starting point, especially for wider bands. However, the best choice depends on the ring design, your knuckle and how you prefer the ring to feel.

Do both hands have the same ring size?

Not always. Fingers on your dominant hand may measure slightly differently. Measure the exact finger and hand where the ring will be worn.

Does band width affect ring size?

Yes. Wide bands and several stacked rings usually feel more snug than a single slim band. A different size may be recommended for these styles.

Can I use a ring worn on a different finger?

It may provide a rough reference, but it is not a reliable measurement. For the best result, use a ring worn on the same finger and hand.

Can every ring be resized?

No. Resizing depends on the metal, stone setting and construction of the ring. Eternity bands, intricate pave designs and some sculptural styles may have limited resizing options.

What should I do if I am still unsure?

Compare both home methods, repeat the measurement on another occasion and confirm the result with a reputable local jeweler before ordering.

A GENTLE STARTING POINT

Measure Carefully, Then Choose With Confidence

Home measurement is a helpful starting point. For special designs, wide bands, eternity styles or any ring that may be difficult to resize, confirm your size locally before finalizing the piece.