Ring size guide
How to Measure Ring Size at Home
You can estimate ring size at home with an existing ring, finger circumference, or a printable guide. Use at least two methods when the purchase matters.
Start with screen calibration
Use the online ring sizer after calibrating your phone screen with a credit card or ruler.
Open ring sizerUse an existing ring
If you have a ring that fits the same finger, measure its inner diameter or match it on the calibrated screen.
Measure your finger
Wrap paper or string around the finger, mark the overlap, and measure the length in millimeters.
Print a guide
A printable ring sizer gives you a scale check, ring circles, and a paper measuring strip.
Confirm important purchases
For expensive, custom, or engagement rings, treat home measurement as a starting point and confirm professionally.
This tool provides an estimated ring size only. Double-check before buying, especially for expensive, custom, or engagement rings.
FAQ
Common questions
How accurate is this ring size tool?
It provides an estimated ring size. Screen calibration, browser zoom, ring alignment, and measuring method can all affect the result.
Can I measure ring size on my phone?
Yes. A phone is often easier because you can place a ring directly on the screen after calibration.
What if I am between two sizes?
Check the fit with another method. Wider bands can feel tighter, so many buyers choose the larger nearby size for wide rings.
Should I use this for an engagement ring?
Use it as a starting point only. For expensive, custom, or engagement rings, confirm with a professional jeweler.