Beads are commonly measured in millimeters (mm), with sizes ranging from under 1 mm to over 25 mm. Larger beads are usually referred to by their approximate measurement in inches. For example, a 10-mm bead is approximately 3/8 inch.

Beads are measured in millimeters (mm). The size of a bead can range from as small as 1mm to as large as 25mm. The most common sizes are between 4mm and 8mm.

To measure the size of a bead, you will need a ruler or a tape measure. Place the ruler on one side of the bead and measure from one end of the bead to the other.

How to Measure Rondelle Beads

If you’re new to beading, or just need a refresher, this guide will show you how to measure rondelle beads. This is a important skill to have, because knowing the size of your beads will help you determine how many beads you need for a project, and what size needle and thread you should use. To measure a rondelle bead, you’ll need a ruler or measuring tape.

Place the bead on the ruler so that one hole is at the 0 mark. Then, measure from one side of the bead to the other, making sure to go through both holes. The measurement you get is the bead’s diameter.

Now that you know how to measure rondelle beads, put your skills to use by planning out your next beading project!

How to Measure Beads With a Caliper

Beads come in all sorts of shapes and sizes, so it’s important to know how to measure them before you start a project. A caliper is the best tool for measuring beads, as it can give you an accurate measurement down to the millimeter. Here’s how to use a caliper to measure beads:

First, place the bead on the caliper’s jaws. Make sure that the bead is level and centered before taking a reading. Next, close the jaws of the caliper until they just touch the sides of the bead.

The measurement will appear on the digital display. If your caliper has a dial instead of a digital display, simply line up the zero mark with one side of the bead, then read off the measurement at the other side. And that’s all there is to it!

With a little practice, you’ll be able to quickly and easily measure any bead using a caliper.

How are Beads Measured


What is the Actual Size of a 20 Mm Bead?

A 20 mm bead is actually 20 mm in diameter.

How Big is an 8 Mm Bead?

An 8mm bead is approximately 0.31 inches in diameter.

How Do You Calculate the Number of Beads?

To calculate the number of beads, you need to know the diameter of the bead and the thread. The formula is: Number of Beads = (Diameter of Bead + Thread) / 2

For example, if the diameter of your bead is 6mm and your thread is 0.8mm, then:

How Big is 10Mm Bead?

A 10mm bead is about the size of a small pea.

What size are my Seed Beads? – Better Beaders Episode by PotomacBeads


Beads are a very important part of jewelry making and there are many different ways to measure them. The most important thing to remember is that the size of the bead does not necessarily dictate the size of the hole, so you need to be careful when choosing your beads. There are many online resources that can help you with this, so don’t be afraid to do some research before you start your project.

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