Question 1

How accurate is this calculator?

Accepted Answer

Within about one size when you measure carefully. It's a guide — for engagement or expensive rings, confirm with a jeweller.

Question 2

Which method is best?

Accepted Answer

The string/paper circumference method is the most reliable. Use a ring you own as a cross-check.

Question 3

What if I'm between sizes?

Accepted Answer

Always go up to the next half size. A slightly loose ring is safer than one you can't wear.

Question 4

Do you store my measurement?

Accepted Answer

No. Your size is kept only in your browser on this device. We never upload it (see our Privacy Policy).

Question 5

Do you sell my data?

Accepted Answer

Never. The only data we handle is an optional email you choose to share for deals.

Question 6

How can I secretly measure my partner's ring size?

Accepted Answer

Borrow a ring they already wear on the correct finger and measure its inside diameter. You can also press it gently into soap to preserve the inner outline, or ask a close friend for help. Avoid guessing for an expensive ring.

Question 7

What if my knuckle is wider than the base of my finger?

Accepted Answer

Measure both the knuckle and the finger base. Choose a size between the two measurements, or go up half a size, so the ring passes the knuckle without sitting too loosely.

Question 8

Do time of day and temperature change ring size?

Accepted Answer

Yes. Fingers are usually larger in the evening and in warm weather, and smaller when cold. Measure two or three times at normal room temperature, preferably late in the day.

Frequently asked questions

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