Ring size & width guide
Find your ring size and width
Find your size from home with our on-screen sizer or printable guide, then try every band width with printable cut-outs. Or pop into our Prahran studio and we’ll size you in person.
On your screen
Match a ring you already own against your screen. It only takes about a minute.
Start measuringPrint at home
A true-to-scale sizer and cut-outs of every band width, checked against any bank card.
Download the printable guideMeasure on your screen
The most accurate way to size at home is with a ring that already fits. Set your screen up once with a bank card or a $1 coin, then match your ring to the circle.
Step 1 of 2
Set up your screen
Hold a bank card flat against the screen inside the outline, and adjust until the outline matches its edges exactly. If you don’t have a card handy, a $1 coin works too.
Step 2 of 2
Match your ring
Lay a ring that fits on the circle, then adjust until the line sits right on the inside edge of the ring.
Your size
Screens can vary slightly, so treat this as a strong guide. For wedding bands, we’d suggest double-checking with the printable sizer.
Know your size from overseas?
Ring size chart
Australian and UK sizes run in letters, with half sizes in between. Each full size adds 1.25mm around the inside of the ring.
| Australia / UK | US / Canada | Europe | Circumference | Diameter |
|---|---|---|---|---|
| F | 2 3/4 | 44 | 43.75mm | 13.93mm |
| F ½ | 3 | 44 | 44.38mm | 14.13mm |
| G | 3 1/4 | 45 | 45.00mm | 14.32mm |
| G ½ | 3 1/2 | 46 | 45.62mm | 14.52mm |
| H | 3 3/4 | 46 | 46.25mm | 14.72mm |
| H ½ | 4 | 47 | 46.88mm | 14.92mm |
| I | 4 1/4 | 48 | 47.50mm | 15.12mm |
| I ½ | 4 1/2 | 48 | 48.12mm | 15.32mm |
| J | 4 3/4 | 49 | 48.75mm | 15.52mm |
| J ½ | 5 | 49 | 49.38mm | 15.72mm |
| K | 5 1/4 | 50 | 50.00mm | 15.92mm |
| K ½ | 5 1/2 | 51 | 50.62mm | 16.11mm |
| L | 5 3/4 | 51 | 51.25mm | 16.31mm |
| L ½ | 6 | 52 | 51.88mm | 16.51mm |
| M | 6 1/4 | 53 | 52.50mm | 16.71mm |
| M ½ | 6 1/2 | 53 | 53.12mm | 16.91mm |
| N | 6 3/4 | 54 | 53.75mm | 17.11mm |
| N ½ | 7 | 54 | 54.38mm | 17.31mm |
| O | 7 1/4 | 55 | 55.00mm | 17.51mm |
| O ½ | 7 1/2 | 56 | 55.62mm | 17.71mm |
| P | 7 3/4 | 56 | 56.25mm | 17.90mm |
| P ½ | 8 | 57 | 56.88mm | 18.10mm |
| Q | 8 1/4 | 58 | 57.50mm | 18.30mm |
| Q ½ | 8 1/2 | 58 | 58.12mm | 18.50mm |
| R | 8 3/4 | 59 | 58.75mm | 18.70mm |
| R ½ | 9 | 59 | 59.38mm | 18.90mm |
| S | 9 1/4 | 60 | 60.00mm | 19.10mm |
| S ½ | 9 1/2 | 61 | 60.62mm | 19.30mm |
| T | 9 3/4 | 61 | 61.25mm | 19.50mm |
| T ½ | 10 | 62 | 61.88mm | 19.70mm |
| U | 10 1/4 | 63 | 62.50mm | 19.89mm |
| U ½ | 10 1/2 | 63 | 63.12mm | 20.09mm |
| V | 10 3/4 | 64 | 63.75mm | 20.29mm |
| V ½ | 11 | 64 | 64.38mm | 20.49mm |
| W | 11 1/4 | 65 | 65.00mm | 20.69mm |
| W ½ | 11 1/2 | 66 | 65.62mm | 20.89mm |
| X | 11 3/4 | 66 | 66.25mm | 21.09mm |
| X ½ | 12 | 67 | 66.88mm | 21.29mm |
| Y | 12 1/4 | 68 | 67.50mm | 21.49mm |
| Y ½ | 12 1/4 | 68 | 68.12mm | 21.68mm |
| Z | 12 1/2 | 69 | 68.75mm | 21.88mm |
| Z ½ | 12 3/4 | 69 | 69.38mm | 22.08mm |
Australian and UK sizes follow British Standard BS 6820. European sizes are the inside circumference in millimetres (ISO 8653), and US sizes are rounded to the nearest quarter. We use Australian sizes for every ring.
Wedding bands
Choose your width
Width is how wide the band sits across your finger. Slim bands (2 to 3mm) suit a delicate look or sit neatly beside an engagement ring, 3.5 to 4.5mm is a classic middle ground, and 5 to 6mm feels bold. The printable guide has gold cut-outs of every width from 2 to 6mm, so you can wrap a few around your finger and see which one feels right.
Wider bands fit a little tighter, so for a band 5mm or wider, go up half a size.
Getting it right
A few things that change the fit
Measure late in the day
Fingers are smallest first thing in the morning and in the cold. Late afternoon, at a comfortable temperature, gives the truest reading.
Mind the knuckle
A ring has to slide over the knuckle before it sits at the base. If your knuckle is noticeably larger, size to the knuckle.
Wider bands fit tighter
A wide band covers more of the finger, so it feels snugger. For a band 5mm or wider, go up half a size.
Between two sizes
Choose the larger one. A ring that’s a touch loose is comfortable, while one that’s a touch tight never quite is.
Measure the correct hand
Your dominant hand is usually a little larger, so measure the hand and finger the ring will actually be worn on.
Measure more than once
Take a reading on two or three different days. If they differ, go with the one taken late in the day.
Wedding band workshops
Making your wedding bands with us?
We only need your sizes to order your gold, so if you already know them, there’s no need to come in before your workshop. Once you’ve found them, just pop them in the quote form on our Wedding Band Workshops page and we’ll take it from there.
In the studio
Rather be sized in person?
You’re very welcome to pop into our Prahran studio for a quick ring sizing appointment. Get in touch and we’ll find a time that suits.
Get in touchReady to make your wedding bands?
Tell us what you have in mind and we’ll send you a quote.
Common questions
What ring size system does Australia use?
Australia uses the same letter sizes as the UK, from A through to Z, with half sizes in between. Most rings fall somewhere between F and Z. If you know your size in another system, the converter above will translate it for you.
How accurate are the on-screen and printable sizers?
Both are true to scale once they’ve been checked against a bank card, and measuring a ring that already fits will usually land you within half a size. Measuring the finger itself is a little less precise, so if you’re unsure, you’re very welcome to pop into the studio and we’ll size you in person.
Do we need to know our ring sizes for a wedding band workshop?
We only need your sizes to order your gold. If you already know them, there’s no need to come in before your workshop. If you don’t, this guide will help you work them out, or you’re welcome to pop into the studio for a quick ring sizing appointment.
Do I need my ring size for a ring making class?
Not at all! In our ring making classes, sizing your ring is part of the class, so there’s nothing you need to measure beforehand.
Can I be sized in person?
Of course! You’re welcome to pop into our Prahran studio for a quick ring sizing appointment. Get in touch and we’ll find a time that suits.
Should my wedding band be the same size as my engagement ring?
Usually, yes. If your wedding band is noticeably wider than your engagement ring, it may need to be half a size larger to feel just as comfortable.