Terabyte (TB) to Gigabyte (GB) Conversion

1 Terabyte (TB) is equal to 1000 Gigabytes (GB) – under the decimal system, also known as SI or base 10.

1 TB is equal to 1024 GB – under the binary system or base 2. 

How many Gigabytes (GB) in a Terabyte (TB)

1 Terabyte is the equivalent of 1000 gigabytes under base 10 / decimal system.

In alternaitve notation, 1 TB = 10³ GB in SI.

1 Terabyte is equal to 1024 gigabytes under the binary system.

Namely, 1 TB = 2¹⁰ GB in base 2.

Difference Between TB and GB

Terabyte goes by the unit symbol TB.

Gigabyte goes by the unit symbol GB.

A Terabyte is larger than a Gigabyte. A Terabyte is 1000 times larger than Gigabyte under base 10 and 1024 times larger under base 2.

Terabytes vs Gigabytes

Below is a helpful table that can show the conversions between Terabytes and Gigabytes.

Terabytes

Terabyte (TB) is a unit that displays how much digital information is stored or transferred.

While Terabytes were once considered a massive (and borderline incomprehensible) amount of computing storage, TB is increasingly popular.

Computer RAM and some consumer electronics can now have their size measured in Terabytes.

Digital libraries with lots of files are now being measured in TB.

It’s akin to how trillions of dollars were once thought of as incomprehensible, but are now standard when talking about the size of country GDP, government spending programs, and the valuation of some companies.

1 Terabyte is the equivalent of 1000 gigabytes or 10¹² bytes under base 10.

When it comes to computer science or IT – where base 2 is used – 1 Terabyte is 2⁴⁰ or 1024⁴ bytes. This is equal to 1.1 trillion bytes.

Terabyte in SI and base 10 (decimal)

1 Terabyte = 10004 bytes
1 Terabyte = 1 trillion bytes

Terabyte in base 2 (binary)
1 Terabyte = 240 bytes
1 Terabyte = 10244 bytes
1 Terabyte = 1,099,511,627,776 bytes

Gigabytes

Gigabyte (GB) is now one of the most extensively used units to measure computing or information storage/transfer. It is equal to 1 trillion bytes under base 10, or 2³⁰ or 1024³ bytes under base 2, which is equal to 1.07 trillion bytes (1,073,741,824 bytes, to be exact).

Gigabyte (GB) is commonly used for measuring the size of memory or the size of a longer digital file, such as a TV show, movie, computer RAM, longer music file/playlist, and similar applications.

A single-layer DVD can generally store up to around 5 GB at the most. A Blu-ray disc can store up to around 25 GB.

Gigabyte in SI and base 10 (decimal)

1 Gigabyte = 10003 bytes
1 Gigabyte = 1 billion bytes

Gigabyte in base 2 (binary)

1 Gigabyte = 230 bytes
1 Gigabyte = 10243 bytes
1 Gigabyte = 1,073,741,824 bytes

How to Convert Terabytes (TB) to Gigabytes (GB)

Here’s how to convert Terabyte to Gigabyte in SI (i.e., decimal system or base 10).

Terabyte in SI

1 Terabyte = 10004 bytes
1GB = 10003 bytes

We know:
1 byte = 1000-3 gigabytes

Hence:
1 Terabyte = 10004 * 1000-3 GB
1 Terabyte = 10001 Gigabytes
1 Terabyte = 1000 Gigabytes

And we can do the following approach under base 2.

TB to GB in Base 2

Terabyte in base 2

1 Terabyte = 240 bytes
1 Terabyte = 10244 bytes
1 byte = 1024-3 GB
1 Terabyte = 10244 * 1024-3 GB
1 Terabyte = 10241 Gigabytes
1 Terabyte = 210 Gigabytes
1 Terabyte = 1024 Gigabytes

We also have this helpful table that should help you save time converting anywhere from 1 Terabyte up to 100 Terabytes.

TB to GB Conversion Table