inSync design Ring Size Guide

inSync design rings

Looking for a comprehensive ring size guide for inSync design rings? Look no further!

Ring size basics

Our rings come in various widths (ranging between 20-35mm) that change as the drawn line undulates and wraps around your finger, so it's important to measure carefully for the perfect fit.

To get started, you can either measure the inner diameter of an existing ring or measuring your finger directly. For the most accurate results, we recommend measuring your finger size several times to eliminate errors.

To determine your ring size we recommend using our ring size chart and helpful tips below. Here's how:

How to measure your finger circumference

To measure your finger size directly, you will need a piece of string, a marker, and a measuring tape or ruler. Cut a piece of string long enough to wrap around the base of your finger (make sure it's at the widest part of your finger) and ensure it's a snug and comfortable fit. Mark where the end of the string overlaps and lay the string flat against a ruler or measuring tape to measure the length in millimetres. Use the Ring Size Conversion Chart below to find your correct ring size.

How to measure the inside diameter of an existing ring

If you have a ring to compare, you can use a ruler or measuring tape to determine the diameter of the inside of the ring.

Measure across the centre of the ring from the inside of one side of the ring across to the other. It can be tricky, so make a couple of attempts and use the largest measurement you got which will be the most accurate, then find the corresponding ring size in the chart below. 

International Ring Size Conversion Chart

Inside Diameter

Inside Circumference

Sizes

 

 

 

 

MM

Inches

MM

Inches

British & Australian

US & Canada

15.70

0.618

49.32

1.94

J 1/2

5

16.51

0.650

51.87

2.04

M

6

17.35

0.683

54.51

2.15

O

7

18.19

0.716

57.15

2.25

Q

8

18.89

0.748

59.34

2.35

R 1/2

9

19.84

0.781

62.33

2.45

T 1/2

10

20.68

0.814

64.97

2.56

V 1/2

11


Now you have your two measurements, refer to the ring size chart. You only need one measurement but using the two will give greater accuracy.

See below an approximate size guide for the inSync rings:

Size S - Size 5-6

Size M -  Size 7-8

Size L - 9-10. 

inSync design rings

Things to keep in mind when measuring a ring

  • The inSync design rings should NOT be measured similarly to a wedding band as they have a wider grip on the finger. We, therefore, recommend selecting one size larger than you normally would with a thin band.
  • It's important to keep in mind that your ring size and finger size are two different things. A ring is a rigid material that will not conform to the shape of your finger. Your finger size changes shape and size over time and also swells and shrinks with different temperatures. 
  • As your finger size changes shape and size over time and it swells and shrinks with different temperatures. When measuring a ring, make sure the finger is at a normal body temperature – fingers can expand or shrink when hot, cold, or damp. Your fingers tend to change size throughout the day, so the best time to measure your finger is towards the end of the day when it is at its largest.
  • Your dominant hand is generally slightly larger - ensure you measure the finger that the ring will be worn on most, on the correct hand!
  • If the ring size is between two sizes, we recommend sizing up just to be safe.

Gift for someone special?

If you’d like to buy a surprise gift, and you can borrow one of their rings, use the ring size guide above to determine their correct size.

Otherwise, if you can put their ring on your finger (pick a finger where the ring fits as close to a normal position as possible). Mark two marks, one on either side of the ring. Leave the marks on your finger and visit a jeweller to find out what size ring fits between the two marks.

Ring size help or Still unsure?

If you're still unsure about your size, don't worry! We are happy to exchange your inSync ring for another size or style, provided it is in its original condition/packaging. And if you're buying a surprise gift for someone special, borrow one of their rings and use the ring measurements in our downloadable guide to determine their correct size.

We are happy to exchange your inSync ring for another size or style, provided it is in its original condition/ packaging.

Our rings are a bit unusual but super comfortable to wear (like all of the inSync pieces). Styles are available in raw stainless steel and 22ct matt gold plate. Browse our ring collection and find details of each design and what we recommend wearing it with!

At inSync design, we're all about unique and comfortable jewellery. 

If in doubt don't hesitate to get in touch with us!

inSync design rings

You could download and print our Printable Ring Size Guide, which outlines the two Methods to size your ring:

Our rings come in various widths ranging between 20-35mm that change as they undulate along the drawn line. They should NOT be measured similarly to a wedding band as they have a wider grip on the finger. We, therefore, recommend selecting one size larger than you normally would with a thin band. In order to determine your size, you can either use an existing ring that fits you. Align it over the circles below, making sure the INSIDE of the ring lines up with the circle. If you are between sizes, we recommend ordering the larger size.

ring sizer

Alternatively, cut the ruler below and wrap it around your finger to measure your finger circumference.

1. Print this page and cut out the Ring Sizer below. Use a utility knife to cut a slit in the ring sizer.

2. Wrap the Ring Sizer around your finger. Then poke the pointed end through the slit with the numbers facing out.

3. Tighten the Ring Sizer by pulling the pointed end toward your finger. The fit should be snug but comfortable around the widest part of your finger (normally at the knuckle)

4. Simply read the number at the slit. if the size falls between 2 numbers use the larger one.

ring sizer

 

Download our Printable Ring Size Guide

Handmade Jewellery - Designer Rings

Shop Our Ring Collection

 

If necklaces are your thing - please refer to our Necklace Size Guide

Each necklace comes with short and long lengths of neoprene to allow for personal preference. Short necklaces sit on or near the collarbone, Medium is a more traditional length. Long and Extra Long sit over most necklines and are also great for layering with shorter lengths.

Short: 360mm / 400mm Length
Medium: 500mm / 550mm Length
Long: 700mm Length
Extra Long: 750mm Length

 

inSync design 

Based on 781 reviews
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Easy to wear

Lots of comments on the simplicity of the necklace. Love how it sits off centre.

Christmas come quick pretty please! 🎄

Cannot wait to get my hands on my Christmas present from my darling husband 🎅! My newest addition to my InSync collection, the Cluster necklace in black!
It’s such an eye catching piece of jewellery, and I know that because I also have it in gold 😂

Great extra to extend earings

Lovely extra to add to a number of studs. So light and they fall beautifully.

R
X2 Medium Outline Earrings - Additional 2nd Layer
Robyn
So Stylish and Unique

Absolutely love my earrings that arrived beautifully packaged. Stylish and unique. My first purchase and won’t be my last . Thank you so much Iris.

Uniquely beautiful design

This broche is a real jewelry that makes any piece of clothing - look special. Its looks sophsiticated, but in the same time - modest, it is gorgeous both on business jackets or evening little black dresses. I recommend getting also same design earings, then your evening look will be totally special.

I love it!!

I really love this piece it is so cool with a shirt or even a white Tshirt.

Gorgeous- I want one in every colour!!

Curvaceous

As I swim in the ocean, I watch the waves. These Fay earrings allow me to have the surf with me always. Insync designs are the best kept secret.

Gorgeous brooch

I bought this for my son’s girlfriend who has just been admitted as a solicitor and we both love it! Such a simple yet stunning piece!! A wee bit envious haha

Beautiful earrings, so light and comfortable to wear too. They elevate any outfit. Love them!!

Love it

Beautiful brooch. Another beautiful piece. Thank you so much.

Nina, thank you for your kind words. I am so glad the brooch has found a home with you, and even happier to know it joins your inSync collection. May it bring you joy each time you wear it. Iris x

I am so excited to add this gorgeous brooch into my collection of inSync design items. I love it!

Delightful

This is a delightful necklace. A good bit smaller than I hoped as I planned to wear it with bigger sort-of matching earrings. Cord a little less firm. Still I do enjoy it, Iris. Thanks for you me superb eye and creativity.

Thank you so much for your kind words Frances, and for your honesty, too. I’m really touched that you still find the necklace delightful, even if it turned out a little smaller and softer than you expected. Every piece is designed to feel good and bring a bit of joy, so I’m glad to hear you’re enjoying it nonetheless.
Your appreciation of the design and my “superb eye” (what a lovely compliment!) truly means a lot. I’m always refining and exploring, so feedback like yours helps me grow and inspires future pieces that might just be the perfect match for those bigger earrings 😊

Curl Necklace - Matt gold

I was looking for something to wear with v-neck linen shirts and cashmere jumpers and think this necklace will meet my requirements. It’s pretty and light and fun!

Thank you so much for your lovely words Margaret, I’m glad the Curl Necklace fits so beautifully into your wardrobe! I designed it with exactly that kind of effortless elegance in mind, something light, a little playful, and easy to wear with those timeless pieces.
It means a lot to know it resonated with you and I hope it brings you joy (and compliments!) every time you wear it. Iris x

Bend Necklace - Raw / Black

I bought this necklace as a birthday present for my daughter. She absolutely loves it.
Well made and arrived quickly.

What a beautiful birthday gift choice Christine, so glad your daughter loves her Necklace!
Thanks for your kind words, it means a lot knowing it arrived swiftly and made a great impression. x

Great necklace

A wonderful purchase, light and comfortable to wear and goes nicely with my X2 outline earrings. Beautiful packaging and quick delivery.

Thanks so much for your lovely words Anne! I'm so glad you’re enjoying your necklace, and love that it goes perfectly with your X2 Outline earrings. 😊
Love that I was able to exceed your expectations, and and it felt special from the moment you opened it. x

Light and unique

I bought my 5th item from insync design. This necklace was even more beautiful than the online image. Whenever I wear it or one of the others that I have, people comment and I love it!
Iris went out of her way to make me happy, so service is top notch! If you didn't realise, it is handmade here in Melbourne and I look forward to wear it for many years to come.

Thank you, Nitza. I love knowing that this is your fifth inSync piece, and that the Stack Necklace has brought you so much joy. It’s always my hope that each piece feels even better in person and becomes something you treasure. I’m thrilled the compliments keep coming your way—you wear it beautifully, I’m sure
And yes—each piece is handmade right here in Melbourne, with lots of love and intention. Thank you so much for your ongoing support, Iris x

Size

I love the design and have other of your pieces. But the ring sizing is strange. This ring barely reaches around my finger. It kind of lays on top of my finger and not that comfortable. You may have sent me the wrong size. But very disappointing.

Hi Rhoda,
Thanks so much for your honest feedback, and for being a loyal inSync collector. I’m really sorry to hear the Reed Ring didn’t fit you as expected. That’s absolutely not the experience I want you to have. It does sound like there might have been a sizing mix-up, so let’s get this sorted for you. I’ll reach out via email to organise an exchange or resize, whatever works best for you.

Thanks again for your continued support. I’ll make this right.
Warmest,
Iris x

Sea goddess

I love these earrings so much! They are quite a sizable statement, but featherlight. Beautifully sculptured, I'm secretly imagining that I'm the sea goddess Amphitrite!

Thank you, Beth! ✨
I absolutely love that you’re channelling your inner sea goddess, Amphitrite herself would be proud! The way you described the Trilogy Hoops as “featherlight but a sizable statement” is exactly what I was going for. So glad they’re making you feel powerful and sculptural. Iris

Appreciate the two lengths of cord provided so can adjust/swap to suit outfit.

So glad you liked the versitility of the two lengths, I love giving options so you can style your piece just right for the day (or the outfit 😉). Thanks for the lovely feedback, Iris x

One more…

I am running out of words to describe my latest addition to my inSync collection! Beautifully funky, caught my eye and became mine! 😂💕

Oh wow—you are the dream Dominique!
I'm running out of words to thank you for your amazing support and impeccable taste (but “beautifully funky” might just be my new favourite phrase 😄). So thrilled this piece caught your eye and found its way into your growing inSync collection—it’s right where it belongs.
Keep shining and styling—it truly means the world, Iris

Beautiful earrings, stunning actually. Very well presented and packaged. Fast delivery. Look amazing on.

Gorgeous

The Loop earrings - classy and individual. Loving the matte gold look and lightweight design. Not too large but enough to be noticed. Matched it with the Ripple ring - perfect! This is my third set of Iris's work and it never dates!

Bronwyn, thank you so much! I'm thrilled you’re loving the Loop earrings — and how perfect with the Ripple ring! It means the world to me that you’ve collected three sets now. Your support (and style!) is everything. Iris x

P
Poppy Earrings - 22ct Matt Gold Plate
Peter

Great earrings

Unique

I got mine at a pre-Christmas fair in Fyswick Park. The compliments keep rolling in. That you can wear in two ways gives double versatility. I guess my 4 and 5 star is that I am not always sure i have got in on correctly to ensure that it stays on, this is for when I do the double and wrap around the neck. But I think I will get the hang of that. It is truly a wonderful investment.

There’s nothing better than a piece that keeps the compliments coming—because let’s be real, who doesn’t love a little extra sparkle in their day?

I hear you on the wrap-around technique Maureen—it’s like learning a new little styling trick, but once you get the hang of it, chef’s kiss . If you ever want a little extra guidance, I'm always here to help! So glad you’re loving your piece—it truly is an investment in effortless, everyday style.