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File / Disk Size Converter

Enter a number in the From field, select units, and then click Convert.

From:  
To:  
Conversion from TB to GB: 1 TB = 1000 GB

Other units:

Byte based with decimal-multiple prefixes (powers of 10):
KB (kilobyte)
MB (megabyte)
GB (gigabyte)
TB (terabyte)
Byte based with binary-multiple prefixes (powers of 2):
KiB (kibibyte)
MiB (mebibyte)
GiB (gibibyte)
TiB (tebibyte)

About:
This tool performs conversion between the most common data storage capacity measurement units.

Enter the initial value you wish to convert in the From filed, select the initial and the target measurement units, and then click the Convert button.

For your convenience this tool will also convert the entered value into some often used units, including TB, GB, MB, TiB, GiB, MiB.

Tebibyte (TiB), gibibyte (GiB), mebibyte (MiB), kibibyte (KiB) are standard units used in the field of data processing and data transmission. Tebibyte, gibibyte, mebibyte, kibibyte are defined as powers of 2.
Tebibyte, gibibyte, mebibyte, kibibyte are closely related to terabyte (TB), gigabyte (GB), megabyte (MB), and kilobyte (KB) respectively, which are defined as powers of 10 in accordance with the International System of Units (SI).

Examples and comparisons with SI prefixes
one mebibyte1 MiB = 220 Byte = 1,048,576 Byte
one megabyte1 MB = 106 Byte = 1,000,000 Byte
one gibibyte1 GiB = 230 Byte = 1,073,741,824 Byte
one gigabyte1 GB = 109 Byte = 1,000,000,000 Byte
one tebibyte1 TiB = 240 Byte = 1,099,511,627,776 Byte
one terabyte1 TB = 1012 Byte = 1,000,000,000,000 Byte

See also:
Data Transfer Rate Converter
File Transfer Time Calculator
Prefixes for binary multiples - http://physics.nist.gov/cuu/Units/binary.html