Is KB bigger than MB? [The Complete Guide]

When talking about computer storage, it’s important to know the difference between KB (kilobyte) and MB (megabyte). But how much do you know about how they relate to each other?

This article will help you understand what each term means and how they relate to one another in terms of computer memory and data storage.

Is KB bigger than MB?

No, a megabyte (MB) is bigger than a  kilobyte (KB) by roughly 1000 times. 1 megabyte (MB) is 1024 kilobytes (KB). 

It is similar to ask if eating an apple or avocado will give you more nutrients. For example, 1 kilobyte has 1,024 bytes, and one megabyte has 1,048,576 bytes.

So what about kilobytes versus megabytes? To make it easy for you to understand: 1KB ~= 0.001% of an MB and 1MB = 1,024KB.

Kb (kilobyte) and Mb (megabyte) are terms used in computer science to measure data. 

The correct terminology for measuring data is bytes, where 1 kilobyte = 1024 bytes and 1 megabyte = 1024 kilobytes.

This means that one kilobyte can hold 1024 bytes of information while one megabyte can hold 1024 kilobytes of information. Therefore, when you look at it from a byte perspective, one megabyte is larger than one kilobyte.

That said, think of them as similar but not equal units of measurement and plan your storage accordingly. 

How Many KB in an MB?

In memory, when we talk about kibibytes (KB) and mebibytes (MB), we’re talking about binary units. That means 1024, not 1000. As such, 1 MB = 1024 KB. So, for example, if you have a CD drive that has 500 MB of space on it, that’s 512000 KB. 

Is KB Smaller than MB?

Kilobyte (KB) is smaller than Megabyte (MB). 1 kilobyte = 1024 bytes, and 1 megabyte = 1024 kilobytes. That means 1 kilobyte is about 0.1% of a megabyte.

For example, if you have an MP3 file that’s 10 MB in size, it will be around 10,000 KB in size. Or if you want to send someone a picture via email and it’s 2 MB in size, you can expect it to be around 2,000 KB.

Storage unit table – KB vs. MB vs. GB vs. TB

Megabytes and gigabytes are a way of measuring computer storage. Kilobytes and megabytes are a way of measuring hard drive space.

Here’s what it all means in plain English: 1 kilobyte (KB) = 1,024 bytes; 1 megabyte (MB) = 1,024 kilobytes; 1 gigabyte (GB) = 1,024 megabytes; 1 terabyte (TB) = 1,024 gigabytes.

Name Equal to Or Or
Bit 1 Bit    
Byte 8 Bits    
Kilobyte 1,024 Bytes    
Megabyte 1,024 Kilobytes    
Gigabyte 1,024 Megabytes 1,048,576 Kilobytes  
Terabyte 1,024 Gigabytes 1,048,576 Megabytes 1,073,741,824 Kilobytes


What is Bit?

In computing, a bit (binary digit) is a unit of information that can have only one of two values, labeled 0 and 1. A group of eight bits is called a byte. By convention, these groups are also referred to as octets.

Thus, if eight bits are grouped together, they form an octet which we now call Byte, so that, in short, we call B = 8-bit. The term bit first appeared in print around 1948 with reference to early computer memory.

What is Byte?

Byte refers to a unit of digital information. The size of one byte varies by computer architecture but can be any value from 1 bit to 8 bits, or in some cases, 9 bits (212). In popular usage, kilobyte, megabyte, and gigabyte may all be heard referring to sizes of data.

While megabytes are referred to as one million bytes (1,048,576) and gigabytes as one billion bytes (1,073,741,824), common usage makes these numbers interchangeable today.

What is Kilobyte (KB)?

Kilobyte (KB) is a multiple of bytes which is 1024 bytes. A kilobyte (KB) uses 1,024 units of measurement called bytes, and a single byte consists of 8 bits.

1024 bytes = 1 kilobyte (KB). So, 1,024 Bytes = 1 KiloByte = 1024 Bytes and so on. The abbreviation for kilobyte is KB. The unit symbol for kilobyte is kB or kb.

One thousand bytes can be referred to as one kilobyte; however, it can also be referred to as one kibibyte if you prefer using SI prefixes.

What is Megabyte (MB)?

Megabyte, one million bytes. One megabyte equals 1,048,576 bytes. It is often abbreviated as MB. These are large memory amounts that are commonly used to measure the RAM and HD capacity of computers.

A typical computer uses a few hundred megabytes of memory. This amount can vary depending on what you’re doing with your computer at any time.

For example, when you’re watching a movie online in high definition, it will use up more memory than if you were checking your email.


What is Gigabyte or GB?

GB stands for gigabyte. A gigabyte is a measurement unit of computer storage and memory capacity equal to 1,024 megabytes (MB).

In other words, 1GB of data can be stored on exactly 1,024 megabytes of storage space (either hard disk drives or solid-state drives), not anymore and not any less.

What is Terabyte or TB?

First thing first, 1TB stands for Terabyte, which means a unit of digital information that equals 1,024GB. A terabyte of data has been internationally defined as exactly 240 bytes, and a binary prefix tera- indicates a multiplication of 1012 (1 trillion) in the International System of Units (SI). This means that one terabyte is equal to 1000 gigabytes (1000GB). You can think about it like 1000 times bigger than Gigabytes.


If you have searched for some of these questions and have gone crazy, I hope today’s post will provide relief and put your mind at ease. And if you ever get confused between kilobytes and megabytes, hopefully, you’ll know what to do: count on this piece.

Mark Warschauer is a tech content writer and blogger with an interest in emerging technologies. He spends most of his time listening to music, reading about new technologies, or writing about them on his blog. He also enjoys playing video games (mostly RPGs), traveling the world, watching movies, and reading books that explore life's big questions.

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