You can find your ring size at home with a strip of paper or a ring that already fits, without a jeweller. This shows you how to measure the finger accurately and read the result against a standard sizing chart.
What you'll need
- A strip of paper or string
- A ruler with millimetres
- A pen
- Optional: a ring that already fits
Step by step
- Wrap paper around the fingerCut a thin strip of paper or string and wrap it snugly around the base of the finger you want to size, where the ring will sit.
- Mark where it overlapsMark the point where the end of the strip meets the rest of it. That mark represents the full circumference of your finger.
- Measure the lengthLay the strip flat and measure from the end to your mark in millimetres. This number is the inside circumference of your ring size.
- Compare to a chartMatch your circumference in millimetres to a ring size chart to get your size in your country's system, such as US, UK, or European.
- Cross-check with a ringIf you own a ring that fits that finger, measure the inside diameter across the circle in millimetres and compare it to the chart as a second check.
Handy tips
- Measure at the end of the day when fingers are at their largest, so the ring isn't too tight later.
- Warm fingers give a truer size; cold weather shrinks them slightly.
- If you land between two sizes, size up, since a slightly loose ring is easier to wear than a tight one.
FAQ
How do I measure ring size at home without a tool?
Wrap a strip of paper or string around your finger, mark where it overlaps, measure that length in millimetres, then match it to a ring size chart.
Should I measure the finger or use an existing ring?
Either works, and doing both is best. Measure the finger for circumference and measure a well-fitting ring's inner diameter to confirm the result.
What if my knuckle is bigger than the base of my finger?
Size so the ring slides over the knuckle but doesn't spin loosely at the base. Pick a size between the two measurements for a comfortable fit.