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How Much Is a Terabyte?

By R. Kayne
Updated May 16, 2024
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A terabyte (TB) is a large allocation of data storage capacity applied most often to hard disk drives. Hard disk drives are essential to computer systems, as they store the operating system, programs, files and data necessary to make the computer work. Depending on what type of storage is being measured, it can be equal to either 1,000 gigabytes (GB) or 1,024 GB; disk storage is usually measured as the first, while processor storage as the second.

In the late 1980s, the average home computer system had a single hard drive with a capacity of about 20 megabytes (MB). By the mid 1990s, average capacity increased to about 80 MBs. Just a few years later, operating systems alone required more room than this, while several hundred megabytes represented an average storage capacity. As of 2005, computer buyers think in terms of hundreds of gigabytes, and this is already giving way to even greater storage.

With the advent of graphic, video and music files, home studios, paint and photo programs, and advanced desktop publishing applications, storage seems to be as wise an investment as real estate. The cost of hard disks has dropped dramatically over the years and continues to do so, even as speed and reliability increase. With the fall in price, more people are installing RAIDs (Redundant Array of Independent Disks) to provide not only storage room, but also redundancy, error-checking, increased performance and backup. A RAID is a series of hard disks working together as a single storage unit. Today a RAID array can easily surpass the 1 terabyte threshold.

Storage space is measured in bytes, which are made up of 8 bits of data. When measuring the number of bytes in a kilobyte (KB) or larger unit, however, there can be differences depending on what standard of measurement is being used. Processor or virtual storage is typically measured using binary:

1,024 megabytes = 1 gigabyte
1,024 gigabytes = 1 terabyte
1,048,576 (1,0242) megabytes = 1 terabyte

From the opposite extreme, starting at the smallest units of measuring data, it takes an octet, or eight bits, to make one byte. Bits are binary digits of 1 or 0 (ones or zeros). A string of eight makes up the single byte that represents a single character, such as a letter or punctuation mark. Over one trillion bytes, or exactly 1,099,511,627,776 bytes, make up a terabyte, or more than eight trillion bits!

Disk storage space is usually measured using the International System of Units (SI). By this standard, 8 bits still equal 1 byte, but 1,000 bytes make a KB. This means that a 1 terabyte hard disk holds 1,000 GB or 1012 bytes.

Though the terabyte represents an enormous amount of storage, the petabyte is waiting just beyond. The petabyte is made up of 1,024 (or 1,000) terabytes.

Tera is Greek for monster, while the word byte was coined in 1956 by Werner Buchholz.

When discussing digital storage units, you may often hear data measured by the number of gigabytes or megabytes it takes up. You’ll rarely hear of any file that is measured by terabytes. This is because a terabyte represents a massively large amount of data. It is equal to 1,000 gigabytes or 1,000,000 megabytes. For the average computer user, this level of storage will never be a necessity, but for some, it is a requirement. Read on for more information if you’re curious about how a terabyte can be used and why it’s significant in the realm of digital processing.

Who Uses Terabytes?

Terabytes can be used by any computer enthusiast, but they’re most often utilized by people who need a large amount of storage. Types of files that contain sizeable data include games, photos, videos, and software. As such, some of the computer users who may require a terabyte of storage include the following:

  • Professional gaming enthusiasts
  • Photographers and videographers
  • Software developers and coders

Any of these people may require a terabyte of storage in order to safely store all of the files on their computer. There are many other people who need a terabyte of storage too, though. If you happen to love movies and have several movie files downloaded directly to your hard drive, investing in a terabyte of storage may not be a bad idea. A terabyte will ensure that you have enough space for movies as well as all the other photos, videos, games, and software you might need to store on your computer.

How Can I Store a Terabyte?

If you’ve realized that you need a terabyte of storage, how exactly do you get it? Most computers come with a standard storage of about 500 gigabytes, which is hardly sufficient if you habitually deal with large file sizes. In order to store a terabyte of data, you will need to invest in additional hard drive space or space in the cloud. There are pros and cons to hard drive and cloud storage, so it’s a matter of personal preference which one is better suited to your needs.

If you do opt for cloud storage, there are an array of options available to help you obtain a terabyte of storage. It’s important to note that a terabyte of storage in the cloud is different than a terabyte of storage on a hard drive. When a file is stored in the cloud, it is not physically stored on a disk the way it is when it’s stored on a hard drive. Instead, it is stored on a server that’s hosted and accessed online.

What Kind of Hardware Do I Need for a Terabyte?

If you’ve decided that you would rather store your files on a physical disk than host them in the cloud, you’ll likely need to invest in new hardware for your computer. The easiest way to gain access to a terabyte of storage is to get a new hard drive for your computer. A hard drive is an electronic device for data storage that stores and retrieves data through magnetic programming. Hard drives are typically more affordable than cloud-based storage, and they also offer the benefit of physical storage rather than online hosting.

If you want to invest in a new hard drive for a terabyte, you can find one at most online retailers. It’s important to do your research to find a brand that’s trustworthy and a product that comes with good reviews. Make sure, too, that you select a hard drive that’s compatible with your computer. Some hard drives are only compatible with PCs, for example, while others can only be used with Mac computers. Read all of the specifications before you make your purchase to ensure you’re getting what you need.

What Can I Do With a Terabyte?

Once you have a terabyte of storage at your disposal, what can you do with it? The possibilities are endless! In addition to the aforementioned uses of storing photos, videos, and movies, you can also use a terabyte for the following:

  • Store a library of music
  • Host high tech software
  • Store large quantity of emails
  • Keep a back up of hard drive

There are an array of different uses for a terabyte. Whether you opt for cloud storage or a physic hard drive, you can enjoy immense storage and secure back up for all of your most important files. Invest in a terabyte if you’re ready to take your storage to the next level.

EasyTechJunkie is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
By anon155496 — On Feb 23, 2011

Hey 25018! I agree. All hail all bytes!

By anon155476 — On Feb 23, 2011

Hey 79720! Why must you be so picky? A Terabyte is not a caterpillar, OK? This is not Greek to us who like the geekspeak. By the way, Greek is spelled with a capital G. Or do you think you are entering a web address? There is no confusion with us who know what a terabyte is regardless of the origin of the word. OK? relax.

By anon142836 — On Jan 14, 2011

I would like to see the terabyte expressed in the number of, say, hi-def 1020 1-1/2 hour long movies that could be contained in one terabyte.

By anon137160 — On Dec 26, 2010

Is there such a thing that surpasses the petabyte? Someone once asked.

Yeah, It's the "Godlio Byte", the information it can hold is about the size of Earth. The size of the unit is obviously smaller, about the size of a gallon of milk and you can use a simple usb port, and have it stand next to whatever tower you are using now.

By anon99644 — On Jul 27, 2010

Thank you lamaestra for a very succinct, and understandable explanation.

By anon79720 — On Apr 24, 2010

There seems to be complete confusion on this topic, let me explain. A terabyte is from the greek word, terrabis or "of the earth". Terrabytes are a caterpillar type insect, most common in tropical Asia. They are found mostly on the Malaysian peninsula. When dried and crushed, they are used as a garnish on vegetable dishes and in stews.

By anon64023 — On Feb 04, 2010

Your historical stats are off. In the late 80's, "average" home computers were the TV set variety (Commodore, Amiga, TRS-80, etc.) and rarely had hard disks. The limited options were about 10MB, typical business systems (PC's) had much larger capacities (50-120MB).

Mid-90's was Windows 95 era, the average hard drive was about 1GB. And a few years later (~2000) the typical consumer system averaged 30GB.

By anon39526 — On Aug 02, 2009

This is only applicable for storage measurement. For network, 1 KB is 1000 bytes, and so on.

By anon35931 — On Jul 08, 2009

A TB is 1000GB which is 1000MB which is 1000KB which is 1000B which is 8 bits. A TiB is 1024GiB which is 1024MiB which is 1024KiB which is 1024B which is 8 bits.

By anon25062 — On Jan 22, 2009

The only discrepancy is that someone decided to use the term "kilo" (which means one thousand) for 1024 bytes. 1024 is clearly not a "kilo", but it is pretty close, so dang it, it just seems good enough!

1024 is the result of doubling 1 and it's result a number of times - a logical counting method for computers.1,2,4,8,16,32,64,128,256,512,1024...etc

By anon25018 — On Jan 22, 2009

All hail the exabyte!!

By anon15996 — On Jul 26, 2008

Is there such thing that surpasses the petabyte?

By anon10172 — On Mar 21, 2008

My company is looking at purchasing a large number of cameras (44) and the company we are employing for the work is pushing a 6tb server to record the activity from the cameras. We are requesting 30 days of stored video. Is 6tb enough, too much? The video would be run on motion detection to cut down on video with no movement.

By lamaestra — On Nov 28, 2007

Technically, the accurate multiplier is 1,024. But because kilo stands for 1,000 (e.g., a kilometer is 1,000 meters) it is sometimes loosely said that 1,000 bytes equals 1 kilobyte. But technically, this is incorrect. The definition that says kilo is 1,000 is correct when you're talking about decimals. But when you're talking about storage and bytes, you are working within a binary framework, and in the binary world, kilo means 2 to the 10th power, or 1,024.

By anon5534 — On Nov 28, 2007

There seems to be some confusion about the size of these units. Some definitions say that a kilobyte (KB) is 1,000 bytes, a megabyte (MB) is 1000 kilobyte (KB), a gigabyte (GB) is 1000 megabytes (MB), and so on. Other definitions say that a kilobyte (KB) is 1024 bytes, a megabyte (MB) is 1024 kilobytes (KB), etc. Why the discrepancy?

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