💍 Ring Size Guide UK
How to Measure Your Ring Size Correctly (UK, US & EU Conversion)
Welcome to the official Ring Size Measuring Guide by OnlineSikhStore Ltd – Trusted UK online seller since 2005, serving customers across the UK, USA and Europe.
Choosing the correct ring size is important for comfort and proper fit. This guide explains the most accurate and reliable ways to measure your ring size at home.
What Does Ring Size Mean?
Ring size is based on:
• The inner diameter of the ring
OR
• The inner circumference of your finger
Different countries use different size systems, including:
• UK (Alphabet letters)
• US (Numeric sizes)
• EU (Circumference in mm)
Method 1: Measure an Existing Ring (Most Accurate)
If you already have a ring that fits comfortably:
Step 1
Place the ring on a flat surface.
Step 2
Using a ruler, measure the inside diameter only (from inner edge to inner edge).
Step 3
Match your measurement in millimetres (mm) to a ring size chart.
Example:
If the inside diameter measures 18 mm, this usually corresponds to approximately:
• UK Size P
• US Size 8
• EU Size 56–57
(Always confirm with a size chart.)
💍 Ring Size Converter Table (UK / US / EU)
Ring Size Conversion Table
|
Circumference (mm) |
Diameter (mm) |
EU Size |
UK Size |
US Size |
|
44.2 |
14.07 |
44 |
F |
3 |
|
45.5 |
14.48 |
45 |
G |
3.5 |
|
46.8 |
14.88 |
47 |
H |
4 |
|
48.0 |
15.29 |
48 |
I |
4.5 |
|
49.3 |
15.70 |
49 |
J |
5 |
|
50.6 |
16.10 |
50 |
K |
5.5 |
|
51.9 |
16.51 |
51 |
L |
6 |
|
53.1 |
16.92 |
52 |
M |
6.5 |
|
54.4 |
17.32 |
55 |
N |
7 |
|
55.7 |
17.73 |
56 |
O |
7.5 |
|
57.0 |
18.14 |
57 |
P |
8 |
|
58.3 |
18.54 |
58.5 |
Q |
8.5 |
|
59.5 |
18.95 |
59 |
R |
9 |
|
60.8 |
19.40 |
60.5 |
S |
9.5 |
|
62.1 |
19.76 |
61.5 |
T |
10 |
|
63.4 |
20.17 |
62 |
U |
10.5 |
|
64.6 |
20.57 |
64 |
V |
11 |
|
65.9 |
20.98 |
66 |
W |
11.5 |
|
67.2 |
21.39 |
68 |
X |
12 |
|
68.5 |
21.79 |
69 |
Z |
13 |
Always measure carefully before ordering. If you are unsure, contact OnlineSikhStore Ltd and we will be happy to guide you personally.
Method 2: Measure Your Finger (No Ring Needed)
If you do not have a ring to measure:
Step 1
Wrap a thin strip of paper or string around the base of your finger.
Step 2
Mark where the paper or string overlaps.
Step 3
Measure the length in millimetres (mm).
This is your finger circumference.
Step 4
Use the ring size conversion chart above to find your correct size.
Important Tips
• Do not pull too tight
• Measure at room temperature
• Measure in the evening (fingers expand slightly during the day)
• If between sizes, choose slightly larger
Common Ring Size Reference (General Guide)
For Men (UK):
• M – P is most common
• P is average adult male
• Larger builds may wear Q–T
For Women (UK):
• J – N is most common
• L is a very common average size
These are general guides only. Always measure for accuracy.
UK / US / EU Ring Size Conversion (Quick Reference)
Here are some common conversions:
Inside Diameter 16.5 mm
UK M
US 6
EU 52
Inside Diameter 17.3 mm
UK N
US 7
EU 55
Inside Diameter 18.1 mm
UK P
US 8
EU 57
Inside Diameter 19.0 mm
UK R
US 9
EU 59
Inside Diameter 19.8 mm
UK T
US 10
EU 62
For full accuracy, always consult a detailed size chart.
Important Ring Sizing Tips
• Rings should slide on easily
• There should be slight resistance when removing
• Cold weather makes fingers smaller
• Warm weather makes fingers slightly larger
• If between sizes, choose slightly larger
Frequently Asked Questions
Is ring size the same as Kara size?
No. Ring size is based on finger circumference or diameter. Kara size is based on knuckle width.
Can weight affect ring size?
Yes, but not always significantly. Temperature and swelling often affect size more than weight.
What if I order the wrong size?
Please contact us before ordering if unsure. We are happy to guide you.
Need Help Choosing the Right Ring Size?
If you are unsure, please send us:
• Your diameter measurement in mm
OR
• Your circumference measurement in mm
We will assist you personally.
Email: info@onlinesikhstore.com
Website: www.OnlineSikhStore.com