Men's rings

Ring gauge


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    Rings are always on display and, especially for men, they are an instant eye-catcher. They can say a lot about the wearer. That's why we've grown and continue to grow our range of rings for men. Our range includes fine ring materials such as surgical steel and titanium, but also tungsten and ceramic.


    Rings for men vary a lot in terms of style. It's always about the wearer and their needs and how the ring fits stylistically into the overall design.

    There are traditional narrow and wider rings and more modern rings with patterns and embellishments. The showier and more massive wedding rings are also a very masculine choice for a finger.


    Strong stainless steel is made of iron, carbon and chrome. Stainless steel is widely used for everything from kitchen utensils to car parts. The quality of steel varies widely depending on its intended use. At Ninja, we use the highest quality 316L steel, known as surgical steel, in our jewellery.

    Steel is the most popular material for men's rings. Its durability, strength and price make it a very desirable ring for the customer. Our range includes steel coloured rings, gold plated steel rings and black coloured steel rings where the colour is coated on the steel.


    Titanium is close to steel in appearance, slightly greyer in colour and much lighter. It is a relatively new material for rings and jewellery in general. Like steel, there are different grades of titanium. Titanium is made in two grades: 90% pure titanium and 99.2% pure titanium. We only use this 99.2% pure titanium in our jewellery.

    Titanium is a very strong material compared to steel and does not scratch easily. It is very difficult to scratch compared to steel, for example. Titanium is a hypoallergenic material, which means that it does not react with the skin. This makes titanium the perfect material for people who are very allergic to different metals.


    The eternal challenge is to find the right size ring without fitting. At Ninja, we use millimetres as the unit of measurement for rings and indicate the ring size as the diameter of the ring. The diameter of the ring is measured from the inner surfaces of the ring.

    The size of the ring is greatly influenced by the finger chosen, the width of the ring and the inner surface of the ring. A small margin of error is found in the finger chosen. If the ring is too big for the middle finger, the ring will most likely work on the index finger. If the ring is too small for the middle finger then it will probably fit an anonymous or small finger.

    How to choose the right size ring?

    The ring should be tight, but still loose enough to be easily removed. We use a rounded inner diameter for rings. If you have a suitable ring, you can easily measure the inside diameter with a ruler. Remember, however, wide rings may require a size larger than thin rings. Rings that are curved on the inside often fit better than flat ones, so a smaller size may be sufficient.

    Measuring the ring size from the finger

    When measuring the diameter of your finger, it is a good idea to measure it to the width of the ring. You can use a string or a paper-cut gauge or order a free one from our online shop. ring gauge. Remember, however, that the ring must go over the joint. 

    Preferably take the measurement a few times during the day. During the day and evening, fingers are often a little swollen, so we recommend that you always measure in the evening. Hands should be at normal temperature, especially avoid measuring cold fingers. Please note this especially in winter. In the morning, fingers are rested and usually at their thinnest. 

    Full table

    ⌀ mm
    US #
    15 15,70 mm 5
    16 16,51 mm 6
    17 17,32 mm 7
    18 18,14 mm 8
    19 18,95 mm 9
    20 19,76 mm 10
    21 20,57 mm 11
    22 21,39 mm 12
    23 22,20 mm 13
    24 23,01 mm 14 

    Ring diameter |

    Changing the ring size

    We always recommend that you measure your ring carefully before ordering to avoid unnecessary returns. Rings have a 14-day right of return under the Consumer Protection Act. If you wish to change the size of your ring, please log in to your customer account ( to make a return and place a new order for the size you want. This way your order will be shipped immediately and you will be sure to get the size you want. Read more about customer returns here.