How to measure ring size at home.

Method 1: Measure a ring you already own (most accurate)

1. 1Open the online ring sizer and set up your screen by picking your phone or matching a bank card.
2. 2Lay a ring that fits the right finger flat on the screen.
3. 3Adjust the circle until it lines up with the inside edge of the ring.
4. 4Read your US, UK, EU and JP size and inside diameter instantly.

Method 2: Measure your finger with a paper strip

1. 1Cut a thin strip of paper about 1 cm wide and 10 cm long.
2. 2Wrap it snugly around the base of your finger. It should slide over your knuckle.
3. 3Mark where the paper overlaps with a pen.
4. 4Lay it flat, measure from the end to the mark in millimeters, and enter it in the sizer.

Method 3: Measure your finger with string

1. 1Wrap a non-stretchy string or floss around your finger.
2. 2Mark or pinch where it meets.
3. 3Measure the length against a ruler in millimeters. That's your finger circumference.
4. 4Enter the number in the sizer or find it in the ring size chart.

Tips for an accurate ring size

• Measure at the end of the day, when fingers are warm and slightly larger.
• Don't measure when your hands are cold.
• Measure the exact finger, on the hand you'll wear the ring on.
• Wide bands (6 mm or more) fit tighter, so go up half a size.
• Measure 2 or 3 times and use the most common result.

Already have a measurement? Look it up in the ring size chart.