How to Find Your Ring Size at Home — Complete Guide by Zixy

How to measure ring size at home using mobile app and ring sizer tool, jewellery size guide for accurate ring fitting

Why Ring Size Matters

A ring that fits perfectly is not a small thing — it is the difference between a piece you wear every single day and one that sits in a drawer. At Zixy, we want every customer to feel confident before placing their order. All our rings are crafted from certified 925 sterling silver — so you're always getting real quality. This guide covers three easy methods you can use from home, no jeweller visit required. And if you still get the size wrong, our 10 Days Exchange policy means we'll swap it — no questions asked.

Method 1: If You Don't Have a Ring (Paper Method)

All you need is a thin strip of paper, a pen, and a ruler.

  1. Wrap a thin strip of paper around the base of your finger.
  2. Mark the exact point where the paper overlaps with a pen.
  3. Measure the length from the start to your mark in millimetres — this is your finger's circumference.

Use the chart below to find your ring size.

Circumference Size Chart

Ring Size Circumference (mm) Ring Size Circumference (mm)
5 44.8 mm 18 57.8 mm
6 45.9 mm 19 59.1 mm
7 47.1 mm 20 60.0 mm
8 48.1 mm 21 60.9 mm
9 49.0 mm 22 61.9 mm
10 50.0 mm 23 62.8 mm
11 50.9 mm 24 63.8 mm
12 51.8 mm 25 64.7 mm
13 52.8 mm 26 66.0 mm
14 54.0 mm 27 66.9 mm
15 55.0 mm 28 67.9 mm
16 55.9 mm 29 69.1 mm
17 56.9 mm 30 70.1 mm

Method 2: If You Have an Existing Ring

Place your ring flat on a ruler and measure the inner diameter — the distance between the two inner edges passing through the centre of the ring. Use the chart below to find your size.

Inner Diameter Size Chart

Ring Size Diameter (mm) Ring Size Diameter (mm)
5 13.9 mm 18 18.4 mm
6 14.6 mm 19 18.1 mm
7 15.0 mm 20 19.1 mm
8 15.3 mm 21 19.4 mm
9 15.6 mm 22 19.7 mm
10 15.9 mm 23 20.0 mm
11 16.2 mm 24 20.3 mm
12 16.5 mm 25 20.6 mm
13 16.8 mm 26 21.0 mm
14 17.2 mm 27 21.3 mm
15 17.5 mm 28 21.6 mm
16 17.8 mm 29 22.0 mm
17 18.1 mm 30 22.3 mm

Method 3: Use the Ring Size Genie App

Still unsure? Download the free Ring Size Genie app on Android. Simply place your ring on the screen and the app instantly calculates your size — no ruler needed.

Download Ring Size Genie on Google Play →

Expert Tips for the Perfect Fit

  • Measure at the end of the day — fingers are slightly larger in the evening.
  • Temperature matters — fingers swell in heat and shrink in cold. Measure at room temperature.
  • Between two sizes? Always choose the larger size for comfort.
  • Wide knuckle? Measure at the widest point of your knuckle, not the base of your finger.

* Measurements are in millimetres as per the Legal Metrology Act, 2023.

* Still not sure? Order with Cash on Delivery — see the ring first, pay only when you love the fit.

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