How to Measure Your Ring Size at Home

Finding your ring size doesn't require a trip to the jeweler. With a few household items, you can get an accurate measurement at home. This guide covers multiple methods so you can choose the one that works best for you.

Method 1: The String or Paper Strip Method

This is the most common at-home method and works well for most people.

1. Cut a thin strip of paper or string, about 10cm (4 inches) long
2. Wrap it snugly around the base of the finger you want to size
3. Mark where the strip overlaps with a pen
4. Lay the strip flat and measure the length in millimeters from the end to your mark
5. This measurement is your finger circumference — use our ring size converter to find your size

Method 2: Measure an Existing Ring

If you have a ring that fits the correct finger well:

1. Place the ring on a flat surface
2. Measure the inside diameter of the ring in millimeters
3. Multiply the diameter by 3.14159 (pi) to get the circumference
4. Use this circumference with our converter to find your size

Tips for Accurate Measurement

• Measure multiple times — take at least 3 measurements and use the average
• Measure at the right time — fingers swell in heat and shrink in cold. Measure at room temperature, in the middle of the day
• Account for knuckles — if your knuckle is significantly larger than the base of your finger, measure both and choose a size between the two
• Consider the band width — wider bands fit tighter, so you may need to go up half a size for bands wider than 6mm

Ring Size Systems Explained

• US & Canada — Numeric scale from 1 to 16, with half sizes (e.g., 7, 7.5, 8)
• UK & Australia — Alphabetic scale from A to Z (e.g., J, K, L)
• EU — Based on inner circumference in millimeters (e.g., 54, 55.5)
• Japan — Numeric scale starting from 1 (e.g., 14, 15, 16)