Ring Size Chart And Sizer

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Ring Size Chart And Sizer 2017-09-19T18:06:01+00:00

Need help determining your ring size? Use our ring sizing guide, tips from customers and our FAQ’s to help work it out.

How do I determine my ring size?

1. By far the most accurate way to find out your ring size is to use our physical ring sizer. Become an MRO member by entering your email below, and take advantage of our ring sizer offer (free + $1.99 shipping and handling);

2. Download and print out our ring sizer below (just make sure you confirm it printed to the recommended dimensions);

Ring Circumference

3. Read the tips provided from our customers below;

4. Head to your local jeweller and ask them to measure your finger;

5. Read our ‘Common Ring Sizing Questions’ after the sizing chart.


Customer tips to determine what ring size to buy

  • Wide bands often fit slightly tighter and customers often go up half a size.
  • Our bands are comfort fit, so they taper to the finger and you may require half a size smaller if you are used to a flat inner band.
  • Fingers swell through out the day so try your ring on first thing in the morning and after lunch or a day at work before you decide to exchange your size.
  • What fits you perfectly in Winter may no longer in Summer. You can use our Fit for Life policy to grab a new size!
  • Titanium is lighter than tungsten so if you are changing metals you may need to drop half a size to compensate for the weight.

Ring Sizer (PDF) <- Click to Download (Please note that the sizer will show the U.S. size as listed in the chart)

Size Chart

Once you have determined your size, you can simply click on the size below to see our range in that size.

Is the ring you want not available in a size you need? Please contact us and see if we can have it custom made at no additional charge!


Size (mm)*Diameter (mm)U.S. SizeU.K./Aust Size
4915.75J 1/2
5818.538.5Q 1/2
5918.899R 1/2
6119.419.5S 1/2
6219.8410T 1/2
6320.210.5U 1/2
6520.6811V 1/2
6621.0811.5W 1/2

Common Ring Sizing Questions

I went to three different jewellers and was given three different sizes, which one is correct?

You’re not alone! While sizing should be the same between different jewellers, slightly differing measuring techniques and tools can result in different results. This is why we recommend using a sizing ribbon from the actual jeweller you will be purchasing from. We also include one of our ring sizers when you purchase a full priced ring from us, so if it isn’t the perfect fit you can accurately measure your replacement and use our easy exchange system for out modern metals rings  and for traditional metals, it is as easy as heading to your local jeweller to have it re-sized.

But what if I order the wrong size, or it is for a gift?

If you find that the ring you have ordered is the incorrect size, you may exchange it in accordance with our super easy exchange/returns policies, just make sure you check out the policy for the metal that you want.

I don’t know what size to buy as it is a gift!

No problems, the most common size men’s ring we sell is a size 10 (T1/2) so we recommend purchasing a ring around this size. Check out our exchange and returns policies first, this may help you decide what metal to buy.

The ring I want is not available in the size I need!

Contact us, we can look into having it custom made for you at no additional charge. Custom made rings are only available if it is a design we stock and will stock in the future, so sale rings are generally not available. Custom men’s rings can require up to 2 months so please get in early and let us know your time frame.

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  • Plated Rings

    Many of our most popular designs use plating. Whether it’s to create a deep black, or using gold or rose gold, plating can take a well designed ring and take it to another level.

    Here at MRO we use an advanced form of plating called Ion Plating, that results in a harder wearing, longer lasting finish. In fact, while other jewellers may use a similar technology, we have a secret process that means our plating lasts even longer. We have gold plated rings from our very early days (over ten years ago) that still look fantastic.

    Having said that, all plating will eventually wear off. Whether it’s gold or another colour, time will eventually take its toll. There are also certain chemicals that can strip plating very quickly, so it is important to know what ring you will be most happy with.

    If you are looking to purchase a wedding ring, and you know that you will never take it off while going to the gym, at work, washing your hands (with detergents), or while doing household jobs, then perhaps a plated ring might not be for you. Having said that, if you are looking for a dress ring, or are happy to look after your wedding ring, then feel free to make a selection from our more unique plated designs.

    Finally, if you feel like you’re somewhere in between, look for a titanium or tungsten design that has its plating on the inner band, or in grooves on the outer band. This way, the exposed titanium or tungsten protects the plating during normal wear and tear.

    As always, we’re not here to sell you on any particular ring, but to help guide you to the ring you will like the look of, and that you will be satisfied with in the long term.

  • Afterpay is an independent company that allows you to order from us immediately, without having to pay straight away. Your order will still be shipped as if you had paid in full today, but your payment will be split over 4 easy payments. You can find out more information by clicking here.


  • mens rings online logo

    60 Days To Exchange Or Return Your Ring

    It’s important to us that you get the right ring, in the right size, which is why we have our easy exchange and returns program. Having said that, we know life can get in the way sometimes, which can make it hard to get that original ring back to us right away. That’s why we give you a full 60 days to return or exchange your ring* should you need to.

    Free Gift Packaging

    How your ring is presented is really important to us, which is why we include a free ring box, as well as gift bag.

    Premium Gift Box Available

    If you want to get really fancy, we also have stunning wooden ring display boxes available in our ring box category (also available in the cart review page).

    Jeweller’s Association Of Australia Member (J.A.A.)

    Trust is hard to come by, which is why we are a member of the J.A.A. This is not an organisation just any jewellery can become a member of, which is why we are proud to be associated with them.

    *excluding custom rings, please see custom ring information page for more details.