Terabytes (TB)
The terabyte (TB) is 1,000,000,000,000 bytes under the SI (decimal) definition used by storage manufacturers, network equipment and macOS.
Convert terabytes to any data unit
1 terabyte = 1,000 gigabytes
Quick facts
- Unit
- Terabyte (plural: terabytes)
- Symbol
- TB
- Measures
- Information / Data
- System
- Decimal (SI)
- Equals
- 1,000,000,000,000 bytes
- Definition
- 1,000,000,000,000 bytes (10^12), the SI definition.
1 terabyte in other units
| Gigabytes | 1,000 GB |
| Megabytes | 1,000,000 MB |
| Bytes | 1,000,000,000,000 B |
| Bits | 8,000,000,000,000 bit |
| Kilobytes | 1,000,000,000 kB |
| Gigabits | 8,000 Gbit |
| Megabits | 8,000,000 Mbit |
| Terabits | 8 Tbit |
What is a terabyte?
The terabyte (TB) is 1,000,000,000,000 bytes under the SI (decimal) definition used by storage manufacturers, network equipment and macOS. Windows still reports sizes with 1024-based units but labels them TB, which is why a new drive shows less space than advertised. The binary counterpart is the tebibyte (TiB).
Where the terabyte sits among data units
The terabyte is number 42 of 64 on our scale of data units, ordered from smallest to largest.
Terabytes in real life
- Laptop drives are commonly 1–2 TB; 1 TB holds about 250,000 photos.
One terabyte is about 7.8 128 GB phones, or about 40 Blu-ray discs, or about 42 copies of English Wikipedia, or about 200 HD movies.
Top terabyte conversions
Common amounts of terabytes
- 0.1 TB
- 0.2 TB
- 0.3 TB
- 0.4 TB
- 0.5 TB
- 0.6 TB
- 0.7 TB
- 0.8 TB
- 0.9 TB
- 1 TB
- 1.5 TB
- 2 TB
- 2.5 TB
- 3 TB
- 3.5 TB
- 4 TB
- 4.5 TB
- 5 TB
- 6 TB
- 7 TB
- 7.5 TB
- 8 TB
- 9 TB
- 10 TB
- 11 TB
- 12 TB
- 13 TB
- 14 TB
- 15 TB
- 16 TB
- 17 TB
- 18 TB
- 19 TB
- 20 TB
- 21 TB
- 22 TB
- 23 TB
- 24 TB
- 25 TB
- 26 TB
- 27 TB
- 28 TB
- 29 TB
- 30 TB
- 31 TB
- 32 TB
- 33 TB
- 34 TB
- 35 TB
- 36 TB
- 37 TB
- 38 TB
- 39 TB
- 40 TB
- 41 TB
- 42 TB
- 43 TB
- 44 TB
- 45 TB
- 46 TB
- 47 TB
- 48 TB
- 49 TB
- 50 TB
- 51 TB
- 52 TB
- 53 TB
- 54 TB
- 55 TB
- 56 TB
- 57 TB
- 58 TB
- 59 TB
- 60 TB
- 61 TB
- 62 TB
- 63 TB
- 64 TB
- 65 TB
- 66 TB
- 67 TB
- 68 TB
- 69 TB
- 70 TB
- 71 TB
- 72 TB
- 73 TB
- 74 TB
- 75 TB
- 76 TB
- 77 TB
- 78 TB
- 79 TB
- 80 TB
- 81 TB
- 82 TB
- 83 TB
- 84 TB
- 85 TB
- 86 TB
- 87 TB
- 88 TB
- 89 TB
- 90 TB
- 91 TB
- 92 TB
- 93 TB
- 94 TB
- 95 TB
- 96 TB
- 97 TB
- 98 TB
- 99 TB
- 100 TB
- 110 TB
- 120 TB
- 130 TB
- 140 TB
- 150 TB
- 160 TB
- 170 TB
- 180 TB
- 190 TB
- 200 TB
- 210 TB
- 220 TB
- 230 TB
- 240 TB
- 250 TB
- 260 TB
- 270 TB
- 280 TB
- 290 TB
- 300 TB
- 310 TB
- 320 TB
- 330 TB
- 340 TB
- 350 TB
- 360 TB
- 370 TB
- 380 TB
- 390 TB
- 400 TB
- 410 TB
- 420 TB
- 430 TB
- 440 TB
- 450 TB
- 460 TB
- 470 TB
- 480 TB
- 490 TB
- 500 TB
- 600 TB
- 700 TB
- 800 TB
- 900 TB
- 1,000 TB
- 1,200 TB
- 1,500 TB
- 2,000 TB
- 2,500 TB
- 3,000 TB
- 4,000 TB
- 5,000 TB
- 10,000 TB
Convert terabytes to all 63 other units
Bits & bytes
- TB to B
- TB to bit
- TB to nibble
- TB to o
- TB to block
- TB to word (16-bit)
- TB to DWORD
- TB to QWORD
- TB to crumb
- TB to memory page
- TB to octaword
Decimal (SI)
- TB to GB
- TB to MB
- TB to kB
- TB to Gbit
- TB to Mbit
- TB to Tbit
- TB to kbit
- TB to PB
- TB to Pbit
- TB to EB
- TB to Ebit
- TB to ZB
- TB to YB
- TB to Zbit
- TB to Ybit
- TB to QB
- TB to RB
- TB to Qbit
- TB to Rbit
Binary (IEC)
- TB to GiB
- TB to MiB
- TB to KiB
- TB to TiB
- TB to PiB
- TB to Gibit
- TB to Mibit
- TB to EiB
- TB to Kibit
- TB to Tibit
- TB to YiB
- TB to ZiB
- TB to Pibit
- TB to Eibit
- TB to Yibit
- TB to Zibit
Legacy binary (JEDEC)
Information theory
Media & everyday comparisons
Convert to terabytes
Frequently asked questions
What is a terabyte?
The terabyte (TB) is 1,000,000,000,000 bytes under the SI (decimal) definition used by storage manufacturers, network equipment and macOS.
How is the terabyte defined?
1,000,000,000,000 bytes (10^12), the SI definition.
How many gigabytes are in a terabyte?
One terabyte equals 1,000 gigabytes.
How many megabytes are in a terabyte?
One terabyte equals 1,000,000 megabytes.
How many bytes are in a terabyte?
One terabyte equals 1,000,000,000,000 bytes.