How do I measure my ring size at home?

Wrap string or paper around your finger, mark the overlap, and measure the length in millimetres. That circumference maps directly to a ring size — for example about 54 mm is a US 7.

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Ring size

What size ring for circumference about 65.3 mm?

Recommended size

US 11

If your your finger circumference is circumference about 65.3 mm, go with a US 11. Ring size comes from the inside circumference of your finger in millimetres. Measure at the end of the day when fingers are largest, and warm — cold fingers shrink.

Size finder — enter your finger circumference (mm)

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Full ring size chart

Your finger circumference	Recommended size
circumference about 44.8 mm	US 3
circumference about 46.1 mm	US 3.5
circumference about 47.4 mm	US 4
circumference about 48.7 mm	US 4.5
circumference about 50.0 mm	US 5
circumference about 51.2 mm	US 5.5
circumference about 52.5 mm	US 6
circumference about 53.8 mm	US 6.5
circumference about 55.1 mm	US 7
circumference about 56.3 mm	US 7.5
circumference about 57.8 mm	US 8
circumference about 59.1 mm	US 8.5
circumference about 60.3 mm	US 9
circumference about 61.6 mm	US 9.5
circumference about 62.8 mm	US 10
circumference about 65.3 mm	US 11

How to measure

Wrap a strip of paper or string around the base of your finger.
Mark where it overlaps and measure the length in mm — that is the circumference.
Measure warm and at day end; size up if your knuckle is much larger.

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What changes your size

Large knuckle	Size to slide over the knuckle, then add a sizing bead inside.
Wide band ring	Go up a half size — wide bands fit tighter.
Cold climate	Fingers shrink in cold; measure warm to avoid a loose ring.

FAQ

What size ring for circumference about 65.3 mm?: For your finger circumference of circumference about 65.3 mm, the recommended ring size is US 11.
How do I measure my ring size at home?: Wrap string or paper around your finger, mark the overlap, and measure the length in millimetres. That circumference maps directly to a ring size — for example about 54 mm is a US 7.