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TB to GB Converter — Data Converter
Storage Converter
ELV
0

Formula
01

What this converter does

This converter turns terabytes into gigabytes and back, and covers MB, KB, bytes and the binary units (KiB, MiB, GiB, TiB). Drive capacity is decimal, so 1 TB equals 1,000 GB. Type a value and read the result instantly.

The decimal-versus-binary difference is why a “1 TB” drive appears as roughly 931 GiB in your operating system. This tool handles both, per NIST.

02

The units it covers

Storage converts through the byte. Decimal units (KB/MB/GB) step by 1,000; binary units (KiB/MiB/GiB) step by 1,024.

View all units & their values
UnitSymbolValueMainly used
ByteB1Base unit
KilobyteKB1,000Decimal
MegabyteMB1,000,000Decimal
GigabyteGB1e9Drive & file sizes
GibibyteGiB1,073,741,824Binary (RAM, OS)
TerabyteTB1e12Disk capacity
03

The formula

Each unit has a fixed value in bytes, so any conversion goes through the byte once:

Conversion
result = value × factor_from ÷ factor_to

Where:

  • value = the number you typed
  • factor_from = the “from” unit’s value in bytes
  • factor_to = the “to” unit’s value in bytes
04

Worked example

Convert 2 TB to GB.

Step 1 · The factor
1 TB = 1,000 GB
Step 2 · Multiply
2 × 1000 = 2,000 GB

So a 2 TB drive is 2,000 GB.

05

The units in this example

Terabytesymbol: TB

The decimal unit for disk capacity — one trillion bytes.

Common storage conversions
  • 1 TB = 1,000 GB
  • 1 TB = 1e6 MB
  • 1 TB ≈ 0.909 TiB
  • 1 TB ≈ 931 GiB
Gigabytesymbol: GB

The decimal unit for file and drive sizes — one billion bytes.

Common storage conversions
  • 1 GB = 1,000 MB
  • 1 GB = 0.001 TB
  • 1 GB ≈ 0.931 GiB
  • 1,000 GB = 1 TB
06

FAQ

QHow many GB in a TB?
One terabyte is 1,000 gigabytes in decimal units, or 1,024 GiB in binary.
QIs TB bigger than GB?
Yes, a thousand times. One terabyte equals 1,000 gigabytes.
08

Sources

NIST SP 811 — units · IEC — binary prefixes

InfoCalculator Editorial Team Fact-checked
Updated Jul 2026 · 3 min read · Reviewed by the InfoCalculator editorial team