Ever wondered how big is 4 cm? Four centimeters is equal to 1.57 inches. 4 cm is a common measurement we often encounter. 

But, has ever happened to you that you come across a situation where you need to measure how big is 4 cm without measuring tape? That is my friend when this article is going to be your guide. However, 4cm is a small measurement, and you don’t always need a tape or a scale to measure it. In today’s article, you’ll find 11 everyday references to estimate 4cm. So, without ado, let’s get straight into it. 

Conversion of 4 cm in inches and other units: 

Centimeter is one unit of measurement. It’s used for smaller measurements. For larger measurements, we usually use inches. There are many others, such as meters, yards, inches, and feet. Here is an easy conversation of 4 inches: 

4 centimeters in inches= 1.57 

4 centimeter in meters = 0.04 

4 centimeter in millimeters = 40 

4 centimeters in feet = 0.131 

How Big is 4 cm on a ruler? 

Generally, a standard ruler is 12 inches long. And 4 cm is 1.57 inches long. So, to measure 4 cm on a ruler, you need to consider one and a half inches. It’s easier! 

How Big is 4 cm Compared to Everyday Objects? 

Sometimes, you’re in a situation where you immediately want to measure how big is 4cm without any ruler around you. That’s when these references will help you to ace the measurements instead of frowning: 

1. Two US Nickels 
2. Diameter of a Standard Paperclip
3. 3 Aspirin Tablets 
4. Width of a USB Stick: 
5. Height of 33 Compact Disc 
6. Diameter of a Grape
7. Length of a  Safety Pins 
8. Diameter of 4 AAA Batteries 
9. Apple Airpods 
10. Four Lego Bricks 
11. Height of a Small Binder Clip 
12. Sewing Pin 

How Big is 4 cm? 

Two US Nickels: 

One of the most common things around you is the US nickel. In the USA, the standard size of a nickel is 0.835 inches or 2.12 cm. It’s probably half of 4cm. However, you can ignore it a little more. 

If we combine two US Nickels, their combined diameter would be 2.12+2.12= 4.24 centimeters. Yeah, I know it’s a little more than 4 centimeters, but you know perfection is a myth in measurements and in real life, too. So, just use this reference with no worries and visualize how big is 4 centimeters. 

Diameter of a Standard Paperclip: 

Standard paper clips are a great reference for measurements. They can help you measure a wide range of measurements, including even small measurements such as 4 inches. A typical paperclip measures about 4 cm in length, making it a handy size comparison for 4 centimeters. 

Paper Clips are used to bind important papers together. They are found easily in homes, offices, and schools. You can find them around within a minute. 

I highly suggest you to do this practically, and it will become a part of your memory that a typical paperclip is a good reference to estimate how big is 4 centimeters. 

3 Aspirin Tablets: 

Ahh! Aspirin a safe heaven and a lifeline for people suffering from pains or headaches. The average size of an aspirin tablet is 1.40 centimeters. This means that if you need to measure 4 centimeters, you need at least 3 aspirin tablets. 

The collective length of 3 aspirin tablets will be 4.23 centimeters. It’s a little larger than 4 cm but a good-to-go reference when you don’t have any reference. ( Pun intended) 

If you have a medicine box at home, you’ll easily find aspirin in it. If you actually want to benefit from this article, try to experiment with the Aspirin length.  Don’t forget to share your experience with me in the comment section. 

P.S. It’s not advisable for kids, but if you’re an adult, you can try. 

Width of a USB Stick: 

USB is such a great invention of our time. Running short of mobile storage, no problem. USB has a solution for every problem. With the help of USV, you can store a large amount of data without any hassle. There are many different USB sizes available, but the average width of a USB stick is around 4 cm, especially in the more compact designs. 

Height of 33 Compact Disc: 

If you’re a 90s kid, the word CD or compact disc might take you to the wonderland of your childhood where you bring CDs to watch movies, films, cartoons, or whatever you like. You might have a collection of CDs. Have you? 

Okay, let’s use the power of imagination. A single CD has a thickness of 1.2 mm. So, if you stack 33 CDs on top of each other, you’ll get 39.6mm, which is roughly How Big is 4 CM. 

However, if you find CDs with a case, the measurement will become easier. A CD with a case measures 0.39 inches. So, if you can stack only 4 cases together, you’ll easily get 4cm. 

Diameter of a Grape: 

Grapes! The ultimate love and a delicious fruit we all love. The grapes are not only a source of taste for your taste buds but you can use them as a reference for measurements as well. A medium-sized grape usually has a diameter of about 4 cm. And you can undoubtedly use it as a reference to visualize how big is 4 cm. 

Length of a Safety Pins : 

Safety pins are one of the most common household items. Imagine you have to go to a meeting urgently and you just saw one of the buttons on your shirt is loose. What’s gonna help? The naive safety pin. 

A standard safety pin is 1.5 inches long or most probably 3.8 cm long. There are many other sizes of safety pins available, but generally, this size is used! 

Diameter of 4 AAA Batteries : 

Our life is surrounded by electric gadgets from the head to the toe. Sorry, the example was just for emphasis. These gadgets are run by AAA batteries. A single AAA battery is 1 cm long. So, 4 AAA batteries are 4 cm. It’s as easy as ABC, no rocket science. So nextime if you’re baffled and scratching your head, how big is 4 cm, use this reference. 

Apple Airpods: 

Apple is an icon. It’s not a brand but a status symbol, to be very honest. Besides iPhones, apple Airpods are also very popular. 

The standard height of a standard generation airpod is 1.59 inches long, which is 4.03 centimeters. Feel free to use it as a reference to measure how big is 4 cm. 

Four Lego Bricks: 

Lego bricks are the second nostalgic item on the list today. Do you remember, the first one on the list it was CDs? Lego bricks are those colorful toys that make our childhood memorable. Remember, the happiness when we complete a project with the help of Lego bricks blocks. Omg! What an achievement that was. 

Well, coming back to measurements. 2×4 is the most common Lego brick block size. The dimensions of these blocks are 1.6 cm × 3.2cm × 1.1 cm. So, the depth of a Lego block is ¼ th of a centimeter. Now, you need to stack 4 blocks on top of each other, and their combined length is 4.4 cm. Don’t hesitate to use this as a reference to visualize how big 4 cm is. 

Height of a Small Binder Clip: 

A small binder clip, when fully closed, is about 4 cm in height. If you have a small binder clip near you, just perform the example and enjoy measurements. 

Sewing Pins: 

Remember your grandma sewing your sweater with a sewing pin at home? A sewing pin is 1.5 inches long. And 1.5 inches is roughly 4cm. This is another great reference you can use to estimate how big is 4 cm. 

More info: Examples of Things What Weighs 30 Pounds

Conclusion: 

From a wide range of objects that can weigh 4cm, I have only enlisted a few items that can help you estimate how big is 4 cm. I’m sure you’ll find many other examples near you; you can also use them as a reference. Keep learning!