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Terabytes to Gigabytes Converter

Convert terabytes to gigabytes and gigabytes to terabytes instantly. Bidirectional digital storage converter with formula and common values.

TB

Gigabytes

2,048

GB

2 TB = 2,048 GB

GB = TB × 1024

Terabytes to Gigabytes: 1 TB equals 1024 GB. To convert terabytes to gigabytes, multiply by 1024 (GB = TB × 1024). For example, 10 TB = 10240 GB.

How to Convert Terabytes to Gigabytes

To convert from terabytes to gigabytes, multiply the value by 1024. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Terabytes to Gigabytes: GB = TB × 1024
  • Gigabytes to Terabytes: TB = GB ÷ 1024

Terabytes to Gigabytes Conversion Chart

Terabytes (TB)Gigabytes (GB)
0.1102.4
0.25256
0.5512
11024
22048
33072
55120
1010240
2020480
2525600
5051200
100102400
250256000
10001024000

Understanding the Units

What is a Terabyte?

A terabyte equals one trillion bytes (10¹²).

Common contexts: hard drives, NAS storage, large datasets.

What is a Gigabyte?

A gigabyte equals one billion bytes (10⁹) in modern SI usage. Storage marketers use the SI definition; some operating systems (e.g., Windows) display the binary GiB (1,073,741,824 bytes) but label it "GB".

Common contexts: storage drives, mobile data plans.

Real-World Reference Points

Item Terabytes (TB) Gigabytes (GB)
Standard-definition movie0.0011
HD movie (Blu-ray)0.024425
Modern smartphone storage0.25256

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FAQ

How many gigabytes are in a terabyte?

One terabyte equals 1,024 gigabytes in binary (used by operating systems). In decimal (used by manufacturers), 1 TB = 1,000 GB.

How do I convert TB to GB?

Multiply the number of terabytes by 1,024. For example, 2.5 TB × 1,024 = 2,560 GB.

Why does my 1 TB hard drive show less than 1 TB?

Manufacturers label drives using decimal (1 TB = 1,000 GB) but your OS reports in binary (1 TiB = 1,024 GiB). A "1 TB" drive shows as about 931 GiB.

How many TB are in a petabyte?

One petabyte equals 1,024 terabytes (binary) or 1,000 terabytes (decimal).

How many gigabytes are in 1 terabyt?

1 TB equals 1024 GB.

How do you convert terabytes to gigabytes?

Multiply the terabyt value by 1024. Formula: GB = TB × 1024.

How many gigabytes are in 5 terabytes?

5 TB = 5120 GB.

How do you convert gigabytes back to terabytes?

Use the inverse formula: TB = GB ÷ 1024. For example, 1 GB = 0.000977 TB.

What is the difference between Terabyt and Gigabyt?

A terabyte equals one trillion bytes (10¹²). A gigabyte equals one billion bytes (10⁹) in modern SI usage. Storage marketers use the SI definition; some operating systems (e.g., Windows) display the binary GiB (1,073,741,824 bytes) but label it "GB".