Finger Size Guide
RING FINGER SIZE GUIDE
The Perfect Fit
A ring should sit like it was made for you — because with the right measurement, it was. Here's every method Gallagher's jewellers use to get it exactly right, at home or in-studio.
SCROLL TO BEGINBEFORE YOU BEGIN
Our Fit Promise
Fingers change size with the weather, the time of day, and even a long flight — so we measure a little differently. Every method below is one our own jewellers use on the bench, translated for the kitchen table.
THE SIGNATURE METHOD
Drag To Your Size
Move the dial to match the circumference of your finger and we'll translate it into a Gallagher size, instantly.
THREE WAYS TO MEASURE
Choose What Fits Your
Moment
Whether you're planning a proposal in secret or sizing your own hand at the kitchen table, one of these will get you within a fraction of a millimetre.
Method one
Borrow An Existing Ring
The most discreet route for a surprise proposal. Take a ring your partner already wears on the correct finger — engagement rings sit on the left hand — and measure its inner diameter.
- Choose a ring worn on the same hand and finger you're sizing for.
- Lay it flat and measure the inside edge to edge, in millimetres.
- Match that number to the diameter column on our size chart below.
Method two
The String And Thread Trick
No ring to borrow? Wrap a strip of string, ribbon, or paper snugly around the base of the finger. Mark where it overlaps, then lay it flat against a ruler.
- Measure at the end of the day, when fingers are at their largest.
- Wrap snug but not tight — you should be able to slide it off.
- The length in millimetres is your circumference; use the chart to convert.
Method three
Book An In-Studio Fitting
For the most precise result — especially for eternity bands and wider settings — our jewellers use a graduated mandrel to size in person, accounting for knuckle width and band thickness.
- Fittings take fifteen minutes, no appointment required.
- We size for wider bands slightly differently — ask your jeweller why.
- Free resizing within 60 days of purchase, once per ring.
REFERENCE
The Gallagher Size Chart
Cross-reference your measurement across the sizing systems used in the US, UK, Australia, and Europe.
| AUSTRALIA / UK | US / CANADA | EUROPE | DIAMETER (MM) | CIRCUMFERENCE (MM) |
|---|---|---|---|---|
| H | 4 | 46 | 14.9 | 46.8 |
| I | 4.5 | 48 | 15.3 | 48.0 |
| J | 5 | 49 | 15.7 | 49.3 |
| K | 5.5 | 51 | 16.1 | 50.6 |
| L | 6 | 52 | 16.5 | 51.9 |
| M | 6.5 | 54 | 16.9 | 53.1 |
| N | 7 | 55 | 17.3 | 54.4 |
| O | 7.5 | 56 | 17.7 | 55.7 |
| P | 8 | 58 | 18.1 | 57.0 |
| Q | 8.5 | 59 | 18.5 | 58.3 |
| R | 9 | 61 | 18.9 | 59.5 |
| S | 9.5 | 62 | 19.4 | 60.8 |
| T | 10 | 64 | 19.8 | 62.1 |
GET IT RIGHT
Five Things That Change Your
Size
time of day
Fingers swell slightly through the day. Measure in the evening for the truest fit.
temperature
Cold hands measure smaller. Warm up with water before taking a reading.
dominant hand
Your dominant hand's fingers often run half a size larger than the other.
band width
Wider bands feel tighter — size up half a size for anything over 6mm.
knuckle vs. base
The ring must clear your knuckle, so measure both and size for the larger.
STILL UNSURE?
Bring Your Hand To Us
Every Gallagher studio offers complimentary fittings, no purchase necessary. We'll measure you properly and note it on file for next time.
BOOK A FITTING