The Best Ring Sizers

Rosenthal Collection Ring Sizer Mandrel and Tool

Ring around the finger

For the occasional wedding or one-off event, the plastic Rosenthal Collection ring sizer is an economical choice.

Best Overall

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If you only need a ring sizer for one or two big events in your lifetime, as is the case for many of us, there’s no point investing in an overly pricey model. Instead, try the Rosenthal Collection Ring Sizer Mandrel and Tool, which is one of the most affordable options available. The gauges are plastic, so they may not last as long as many of the stainless steel competitors out there, but they’re accurate and convenient enough to use for a one-off occasion like a wedding or engagement. As a bonus, they also come with a mandrel for measuring the ring itself, so you’ll know exactly what size you need.

Pros:

• Lightweight and easy to carry
• Very affordably priced
• Half-size increments

Cons:

• Feels cheaply made
• Not super durable

Tanjin Black US UK Ring Sizer Measuring Tool

Back to basics

This tool from Tanjin is a simple plastic band that makes finger measuring easy.

Simplest Design

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There’s no reason to fumble around with multiple different gauges when you have the Tanjin Black Ring Sizer Measuring Tool, which is just a simple plastic band that you strap on your finger and adjust to your liking. It’s by far one of the most convenient solutions on the market to solving your ring-sizing problems since it does away with the need for swapping and exchanging individual gauges as you home in on the correct width. True, the measurements on the band can be a bit more difficult to read than on standard gauges, but this tool is also much more compact and easy to use.

Pros:

• Includes UK- and US-size bands
• Very lightweight
• Extremely affordable

Cons:

• Can be difficult to read
• Not very durable

Accmor Jewelry Ring Sizer Tools

One ring kit to rule them all

Hobbyists and even professional jewelry makers will love the assortment of implements in this kit.

Most Comprehensive

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Whether you’re a DIY jewelry enthusiast or a professional, you’re going to need more than just a simple ring sizer for all your projects. Luckily, the Accmor Jewelry Ring Sizer Tools kit includes everything you need to size, fit, clean, and polish all of your finger ornaments for yourself and others. There’s a mandrel, a rubber hammer, a collection of gauges, and even stone burnishers for bringing a high luster to worn metal surfaces. Everything is of fairly high quality, and it all comes in a handy case that helps keep the whole set well-organized.

Pros:

• Mandrel and gauges are metal
• Two pieces of polishing cloth
• Good value for the price

Cons:

• Lots of individual pieces
• Mallet is not super durable

Frequently Asked Questions

What is a ring sizer?

As its name suggests, a ring sizer is a tool that helps you determine which size ring is right for you. Ring sizers should not be confused with ring resizers, which are designed to help enlarge or shrink ill-fitting rings to your size. Ring sizers generally come in the form of variously sized gauges, made of either metal or plastic, that you can try on until you find one that fits you. Alternatively, other ring sizers come as an adjustable, size-marked band that you can tighten or loosen to home in on the appropriate width.

How do I use a ring sizer?

This depends on which kind of ring sizer you have, as previously mentioned. If you have a gauge set, you can try on individual sizers until you arrive at one that fits comfortably on your finger. As a general rule, you want to try and find the smallest size ring that still feels good — tight enough that you have to twist it over your knuckle, but not so tight that it uncomfortably constrains your finger. An adjustable sizer works in much the same way, though instead of trying on each gauge to find the right size, you simply tighten the band until it feels right.