GUIDE

Ring Size Guide

Find your perfect fit. Our ring size guide will help you measure your ring size easily and accurately, so you can choose your TONOUS ring with confidence.

Three Easy Ways to Find Your Size

CHOOSE THE METHOD THAT WORKS BEST FOR YOU

1. Measure a Ring You Already Own

Choose a ring that fits the intended finger comfortably.

Measure the inside diameter of the ring from one inner edge to the opposite inner edge, across the widest point.

Compare the measurement in millimetres with the size chart below.

Tip: Measure only the inside of the ring — do not include the metal band.

Οδηγός Μεγέθους Δαχτυλιδιού – TONOUS Jewellery

2. Measure Your Finger with a Strip of Paper

Wrap a narrow strip of paper comfortably around the base of your finger.

Mark the point where the paper overlaps, then lay it flat and measure the length in millimetres.

This measurement is your approximate finger circumference.

Use the chart below to find the corresponding ring size.

 

3. Use a String or Thread

Wrap a piece of non-stretch string around the base of your finger.

Mark where the ends meet and measure the length against a ruler in millimetres.

Match your measurement to the Finger Circumference column in our size chart.

Avoid pulling the string too tightly — your ring should fit comfortably over your knuckle.

 

Ring Size Conversion Chart

FIND YOUR SIZE ACROSS DIFFERENT MEASUREMENT STANDARDS

TONOUS / EU Size
US SIZE
UK SIZE
Inside Diameter (mm)
Finger Circumference (mm)

48

4 1/2

I

15.3

48.0

50

5 1/4

J

15.9

50.0

52

6

L

16.6

52.0

54

6 

N

17.2

54.0

56

7 

O

17.8

56.0

58

8

Q

18.5

58.0

60

9

R

19.1

60.0

62

9

T

19.7

62.0

64

10

U

20.4

64.0

66

11

V

21

66.0

Helpful Tips

FOR THE MOST ACCURATE RESULT

Consider Temperature

Finger size can change slightly with temperature. Measure when your hands are at a comfortable, normal temperature.

Measure at the Right Time

Fingers may be slightly larger later in the day. For a comfortable fit, measure your finger toward the end of the day.

Allow for Your Knuckle

If your knuckle is wider than the base of your finger, measure both areas and choose a size that will pass comfortably over your knuckle without being too loose.

Between Two Sizes?

If your measurement falls between two sizes, choosing the larger size will usually provide a more comfortable fit.

Still Unsure?

Finding the right fit is important.

Our team is here to help you determine your ring size and answer any questions before you place your order.

Contact us for personalised assistance and we will be happy to guide you.

CONTACT US →