The Ultimate Ring Sizing Guide | Kate & Kole

  1. The Ultimate Ring Sizing Guide

    So you never have to guess

  1. Finding your perfect ring size is one of the easiest parts of buying a ring, once you know how. It takes about five minutes, no trip to a jeweller required, and there's no pressure to get it exactly right first time since resizing is almost always a simple fix if needed.

    This guide covers the best way to measure a ring size using our own Virtual Ring Sizer, Physical Ring Sizer and a few simple backup methods, how to read a ring size chart, and the questions we're asked most often, so you can order with confidence.

  1. Get in touch

    Why Getting The Right Ring Size Matters

    A ring that fits well feels effortless. It sits comfortably, stays secure on your finger, and is simply one less thing to think about, so it's worth spending a few minutes getting your measurement right. And if it's ever not quite spot on, no stress, that's exactly what our resizing service is there for.

    Please note, we can typically resize a ring a few sizes up or down from the size it's made in, though exactly how many varies by design. If you're truly unsure of your size, get in touch with our team and we'll help you out.

    Get in touch
  2. Close-up of a hand on a woman's face with diamond rings, covering one eye.

  1. How to Measure Your Ring Size at Home

  2. TRY OUR VIRTUAL RING SIZER

    Our Virtual Ring Sizer

    the easiest and most discreet option

    The quickest way to get an accurate size is our Virtual Ring Sizer, right from your phone. All you need is a touchscreen device and a ring that already fits the finger you're sizing, flat, smooth bands measure best. Scan the QR code or open the tool on your phone, the tool will automatically detect your device and screen size, if it doesn't, use a standard card against the screen so it can calibrate correctly, and it'll match you to your size in seconds. As with any screen-based measurement there's a small margin for error, and things like band width or which finger you're sizing can shift the fit slightly, but it's the fastest and most reliable place to start.

    TRY OUR VIRTUAL RING SIZER

  3. String or Paper Method

    Wrap a thin strip of string, ribbon, or paper snugly around the base of your finger, mark where it overlaps, then measure that length in millimetres and match it against a size chart.

  4. Existing Ring Method

    Take a ring that already fits the intended finger well and measure the inside diameter, from one inner edge straight across to the other. This is generally more reliable than the string method.

  5. Purchase a Physical Ring Sizer

    Our Physical Ring Sizer

    prefer something physical in hand?

    If you'd rather try on a proper sizer than measure against a screen, our Ring Sizing Kit ($15) is delivered within a few days. Try it on at a few different times of day for total confidence, then simply let us know your size when you're ready to order.

    Purchase a Physical Ring Sizer

  1. Understanding Ring Size Charts

    Ring sizes are labelled differently around the world. Australia and the UK use letters (like J or O), the US and Canada use numbers (like 5 or 7), and much of Europe measures the ring's internal diameter in millimetres.

    Here's our full Kate & Kole size guide:

Circumference (mm) Inside Diameter (mm) Australia & UK USA & Canada Europe
44.2 13.97 F 3 44
45.2 14.37 G 3 1/2 45
46.5 14.76 H 4 46 1/2
47.8 15.15 I 4 1/2 48
49.0 15.55 J 5 49
50.3 15.94 K 5 1/2 50 1/2
51.5 16.34 L 6 51 1/2
52.8 16.73 M 6 1/2 53
54.0 17.12 N 7 54
55.3 17.52 O 7 1/2 55 1/2
56.6 17.91 P 8 57
57.9 18.30 Q 8 1/2 58
59.1 18.70 R 9 59
60.4 19.09 S 9 1/2 60.5
61.6 19.49 T 10 62
62.8 19.88 U 10 1/2 63
64.1 20.27 V 11 64
65.3 20.67 W 11 1/2 65 1/2
66.6 21.06 X 12 67
67.8 21.45 Y 12 1/2 68
69.1 21.85 Z 13 69

  1. Match either your circumference or inside diameter measurement to the closest row above. Treat this as a helpful guide rather than the final word, since sizing can vary slightly between band widths and styles. For pieces that are harder to resize later, such as eternity bands, it's worth confirming your measurement with our Virtual Ring Sizer, purchasing a Ring Sizer or visiting us in-store first.

  1. Factors That Can Affect Your Ring Size

    Finger size isn't fixed. Fingers swell slightly in heat and humidity and shrink in the cold, so a winter measurement might run smaller than a summer one. Fingers are also typically smallest in the morning and largest by evening.

    Your dominant hand tends to be slightly larger than the other, so always measure the finger the ring will actually be worn on. Weight changes, pregnancy, and exercise can also shift finger size over time, worth keeping in mind if you measured a while ago.

    Wider bands generally need to be sized up slightly compared to thin bands, since more metal touches the finger at once.

  2. Buying a Ring As a Surprise

    Planning a proposal or surprise gift? Borrowing a ring they already wear on the correct finger measuring it with our Virtual Ring Sizer or tracing its inside edge onto paper is one of the easiest ways to get an accurate size discreetly. A friend or family member asking casually, or checking rings already in their jewellery box, can also help.

    If you're not fully confident in the size, sizing up slightly is a safe bet, and resizing afterwards is easy, so there's no pressure to get it exactly right the first time.

  1. FAQs

  2. What is the average ring size in Australia?

    Women's sizes typically fall between J and N, and men's between Q and U. These are averages only, so always measure the actual finger the ring will be worn on.

  3. Does ring size change over time?

    Yes. Weight, age, pregnancy, temperature, and time of day can all shift your finger size slightly, so double-check before ordering a ring you haven't measured for recently.

  4. Should I use the Virtual Ring Sizer or the Ring Sizing Kit?

    Either works well, so it comes down to preference. The Virtual Ring Sizer is discreet, instant and doesn't cost anything, making it a great first step, while the Ring Sizing Kit gives you something physical to try on at different times of day, which some people find more reassuring for an important purchase like an engagement ring.

  5. Is the string or paper method accurate enough to order a ring?

    It's a good starting point for casual or adjustable pieces, but it can be thrown off by how tightly the string is wrapped. For an important purchase like an engagement ring, we'd recommend using our Virtual Ring Sizer to confirm size with an existing ring.

  6. How do I find out someone's ring size without them knowing?

    Borrow a ring they already wear on the intended finger and use our Virtual Ring Sizer to accurately find the ring size. Asking a close friend to help, or sizing up and adjusting later, are good fallback options.

  7. How does the Kate & Kole Virtual Ring Sizer work?

    It's designed to be used on your phone. You'll need a ring that already fits the finger you're sizing (flat, smooth bands work best) and a standard card. Open the tool via the QR code or on your mobile, hold your ring and the card against the screen to calibrate it, and it matches you to your size in seconds.

  8. What should I do if my measurement falls between two sizes?

    Size up rather than down, especially for wider bands, since rings are usually easier to make smaller than to stretch. If you're unsure, reach out and we'll help you decide, and remember your ring can always be resized afterwards if needed.

  9. Why do wider rings need to be sized differently to thinner ones?

    A wider band has more surface area against your finger, which makes it feel tighter than a thin band of the same size. Many people go up half a size or more for a wider style.

  10. Is the Virtual Ring Sizer accurate?

    It's a great first step and the most convenient option we offer, though as with any screen-based measurement there's a small margin for error, and things like band width or dominant hand can affect fit slightly. If you'd like extra peace of mind, our team can help confirm your size, and every ring comes with complimentary resizing regardless.

  11. Can rings be resized after they've been purchased?

    Yes, and there's no need to worry if it's not quite right. We offer a complimentary resize on engagement rings, so if it's too tight or too loose once it arrives, our team will sort it out for you. In-store sizing is always an option too if you'd like it checked in person.

  1. Two people in a field with woman extending a hand showing new engagement ring towards the man
  2. GET IN TOUCH

    Still Not Sure? We've Got You Covered

    Here's the reassuring part: even if you don't get it exactly right, it's easily fixed. Every Engagement Ring comes with a complimentary resize, so if it arrives too tight or too loose, we'll adjust it for you at no extra cost. Our team is always on hand to help you work out the right fit before you order, and in-store sizing is available any time if you'd rather have it checked in person. However it goes, we're here to help you get to the perfect fit.

    GET IN TOUCH