Things That Are 1 Centimeter Long: 10 Common Examples

Are you curious about how small 1 centimeter can be? 

One centimeter is a metric unit of length that is equal to 10 millimeters. It is approximately 0.39 inches or slightly less than half an inch long.

In this article, I will explore some common examples of things that are only 1 centimeter long. From insects to everyday objects, you will be amazed at what can fit into such a tiny space.

Things That Are 1 Centimeter Long



Ladybugs are cute, small insects that are only about 1 centimeter long. With their bright colors and distinctive spots, they are easily recognizable.

Ladybugs are beneficial insects that help control pests in gardens and farms.

2 Pencil Erasers

pencil eraser

A pencil eraser is a small, rubber-like tool used to remove marks made by a pencil. It is typically rectangular in shape and has a soft, flexible texture. 

The length of a standard pencil eraser is around 5 millimeters. So, if two of them were placed side by side they would measure 10 millimeters, which is equal to 1 centimeter.

Width of a Ballpoint Pen

ballpoint pen

The width of a ballpoint pen can vary depending on the specific pen model and manufacturer. 

However, on average, the width of a ballpoint pen is around 0.7-1.0 centimeters 



Buttons are small, round fasteners that come in many shapes, sizes, and colors. 

Some buttons are as small as 1 centimeter, making them perfect for small clothing items or crafts.

Related: 15 Common Things That Are 2 Millimeters



Peppercorns are a type of spice commonly used in cooking. They are small and only measure about 1 centimeter in diameter. Peppercorns come in a range of colors, including black, white, and green, and can add flavor and spice to any dish.

Head of a Thumbtack


The head of a thumbtack is typically circular or oval in shape, with a diameter of around 0.5-1 centimeter (or approximately 0.2-0.4 inches). 

It is typically made of flat, smooth material, such as metal or plastic, and is used to press the thumbtack into a surface for hanging or attaching items.

Lego Block

Lego block

Lego blocks are small plastic building blocks that measure about 1 centimeter in length. They are popular toys that allow children to build and create their own structures and designs.

1 Pea


A pea is a small, round, and green edible seed that is commonly used as a vegetable in cooking. 

Its size can vary, but on average, a single pea has a diameter of around 0.8-1 centimeters. 

Peas are a good source of fiber, protein, and various vitamins and minerals.

SD Card

sd cad

An SD card is a small memory card commonly used in digital cameras and other electronic devices. They measure about 1 centimeter in length and can store large amounts of data.

Width of a Paperclip

1 centimeter long paper clip

The width of a standard paperclip is around 0.5-1 centimeter (or approximately 0.2-0.4 inches). 

However, there are various sizes and shapes of paper clips available, and the width can vary depending on the specific type and manufacturer. 

Paperclips are commonly used for holding together sheets of paper or other lightweight items.


What is an example of 1 centimeter?

An example of something that measures 1 centimeter is the width of a fingernail or the diameter of a cherry tomato.

How big does 1 cm look like?

1 centimeter is quite small and may appear as a thin line or a small dot, depending on the context.

How long is 1 cm on a ruler?

On a standard ruler, 1 centimeter is equal to 10 millimeters or approximately 0.39 inches.

How big around is 1 cm?

1 centimeter has a circumference of approximately 3.14 centimeters or 1.23 inches.

What is shorter than 1 centimeter?

Many things are shorter than 1 centimeter, such as a grain of rice, a pencil lead, or an ant.

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