Ring Size Guide: Different Ways to Measure Ring Size (With Chart)

A ring size guide will help you get the perfect ring that fits your finger effortlessly. To know the right ring size, measure your finger’s circumference with a snug tape or string first. Then note the length in millimeters, and match it to the ring size chart for your specific region. You can also use an existing ring as a reference to the jeweler in some cases.

This ring size guide will share the universal ring size chart, along with different ways to measure ring size at home. You can easily follow the guide and get the right size for your new timeless piece.

Ring sizing systems differ because each region uses a different measurement reference. This section clarifies international ring size conversion and why direct comparisons don't work.

• US sizes are based on diameter increments measured in specific fractions of an inch.

• European sizes reflect circumference in millimeters, measured around the finger. 

• UK sizes follow an alphabetical scale with half sizes between letters.

Ring size charts convert finger measurements into standard ring sizes across regions. You must use an accurate ring size chart to ensure your measurement translates properly for your region or brand.

This chart shows how to determine your ring size regardless of where you're ordering from.

Note: Measurements should always be taken from the inside of the ring or directly around the finger. International ring size conversion becomes straightforward when you reference this chart carefully.

Now, let’s walk you through some easy ways to measure ring size at home with full control over accuracy and timing. You can choose a method depending on your available tools and situation.

This method shows you how to find out your ring size using tools you already have at home.

1. Wrap a flexible tape measure or a non-stretchy string around the base of your finger, making sure the fit is snug but not tight. 

2. Mark where the ends meet using a pen or marker, then measure that length in millimeters with a ruler. 

3. Use that measurement to find your ring size on the chart above (finger circumference).

This is often the most accurate way to figure out ring size when you have a ring that already fits perfectly.

1. Choose a ring that already fits the correct finger, then measure the inside diameter in millimeters using a ruler or caliper. 

2. Do not include the thickness of the metal in your measurement—only the inner circle matters. 

3. Match the inner diameter measurement to the size chart above.

Many jewelers provide downloadable ring sizers that help you determine your ring size at home.

You can download the brand's official PDF ring sizer, print it at 100% scale without any scaling adjustments, place an existing ring over the guide circles, or wrap the measuring strip around your finger, then match the indicated size.

Some people don't have string or tape measures readily available. Paper works if done carefully and can tell you the right ring size without specialized tools.

1. Cut a thin strip of paper, and wrap it around the base of the finger where you'll wear the ring.

2. Mark where it overlaps with a pen, measure the length in millimeters with a ruler, then match the number to the ring size chart.

For surprise proposals or gifts, borrow a ring they already wear on the correct finger temporarily (or sneak it away!). Measure the inside diameter discreetly using a ruler or caliper, then compare against a conversion chart. If you're between sizes or unsure, choose slightly larger—resizing down is easier than resizing up.

• Aim for a snug but comfortable daily fit that won't slide around during normal activities. 

• Some jewelers offer placeholder rings or temporary sizing options for proposals, allowing you to present a stunning piece without the sizing pressure. 

• Account for seasonal swelling, as fingers are often larger in summer than in winter. 

• Leave room for future resizing if needed, especially for rings that might need adjustments as hands change over time.

Our ring size guide has covered every aspect of how to measure ring size accurately, from basic measurement techniques to advanced considerations for different ring styles and finger types. Accurate ring sizing comes down to careful measurement and clear reference points. Taking a few extra minutes to measure properly can prevent discomfort, resizing, or returns later.