Data

What is a Terabyte?

The terabyte is the standard unit for hard drives, video archives, and consumer cloud-storage subscriptions.

Overview

The terabyte (TB) equals 1,000 gigabytes (10¹² bytes decimal, or 1,099,511,627,776 bytes as TiB binary) and is the standard unit for hard drives, video archives, and consumer cloud-storage subscriptions. Modern hard drives ship in 1–20 TB capacities, SSD drives commonly come in 0.5–8 TB sizes, and cloud-storage tiers offer 1, 2, or unlimited TB plans. Professional video editors store raw footage in tens of TB. The terabyte relates to the gigabyte (1,000 GB = 1 TB), the petabyte (1,000 TB = 1 PB), and the terabit (1 TB = 8 Tbit). Streaming services like Netflix process petabytes of bandwidth per day. The first 1-TB hard drive shipped in 2007 (Hitachi Deskstar 7K1000); today, 8-TB consumer drives cost less than $200.

Symbol
TB
Category
Data
Plural
terabytes

Convert Terabyte to all units

Live result
TB
Bit8,000,000,000,000 bByte1,000,000,000,000 BKilobyte1,000,000,000 KBMegabyte1,000,000 MBGigabyte1,000 GBPetabyte0.001 PBMegabit per Second8,000,000 Mbps

Relationship to Other Data Units

1 TB equals

Visual reference for how the terabyte relates to other data units. Each row links to the full converter for that pair.

1 TB=8,000,000,000,000 b1 TB=1,000,000,000,000 B1 TB=1,000,000,000 KB1 TB=1,000,000 MB1 TB=1,000 GB1 TB=0.001 PB1 TB=8,000,000 Mbps

When Is the Terabyte Used?

  • Desktop HDDs and SSDs
  • Home NAS storage
  • Cloud-storage tiers
Real-world examples

Desktop HDD: 1–20 TB. Typical NAS: 4–48 TB. Cloud-storage plans: often 1–2 TB.

Tips for Using the Terabyte

  • 1 TB = 1000 GB (SI). 1 TiB = 1024 GiB.
  • TB drives formatted show less in OS (binary vs SI).
  • Archival/backup workflows typically measured in TB.

Common Mistakes

  • Expecting a 1 TB drive to hold 1 TiB — actually 931 GiB formatted.
  • Buying a TB drive for backup without considering RAID overhead.
  • Confusing TB with Tb (terabit, 1/8).

Convert Terabyte to Other Data Units

Terabyte to Bit
1 TB = 8,000,000,000,000 b
Terabyte to Byte
1 TB = 1,000,000,000,000 B
Terabyte to Kilobyte
1 TB = 1,000,000,000 KB
Terabyte to Megabyte
1 TB = 1,000,000 MB
Terabyte to Gigabyte
1 TB = 1,000 GB
Terabyte to Petabyte
1 TB = 0.001 PB
Terabyte to Megabit per Second
1 TB = 8,000,000 Mbps

Convert Other Units to Terabyte

Bit to Terabyte
1 b = 1.25 × 10^-13 TB
Byte to Terabyte
1 B = 1 × 10^-12 TB
Kilobyte to Terabyte
1 KB = 1 × 10^-9 TB
Megabyte to Terabyte
1 MB = 0.000001 TB
Gigabyte to Terabyte
1 GB = 0.001 TB
Petabyte to Terabyte
1 PB = 1,000 TB
Megabit per Second to Terabyte
1 Mbps = 1.25e-7 TB

FAQ About the Terabyte

3 questions
What does the Terabyte (TB) measure?
The terabyte measures data. The terabyte is the standard unit for hard drives, video archives, and consumer cloud-storage subscriptions.
When is the Terabyte used?
The terabyte is used in: Desktop HDDs and SSDs; Home NAS storage; Cloud-storage tiers. Desktop HDD: 1–20 TB. Typical NAS: 4–48 TB. Cloud-storage plans: often 1–2 TB.
How accurate are conversions involving the Terabyte?
All conversions on Units Converter use NIST SP 811 and BIPM reference values, accurate to 8 significant figures.