How to Convert Terabytes to Bytes (TB to B)
Data conversions explain why a 1 TB drive shows less space on your computer and help compare mobile plans sold in gigabytes. This guide shows how to convert terabytes into bytes by hand, with examples and a quick-reference table.
The conversion
To convert terabytes to bytes, multiply the value by 1.000000e+12. To go the other way, divide by the same number (or multiply by 1.000000e-12). For a quick estimate, multiply by about 1,000,000,000,000.
Bytes = terabytes × 1.000000e+12
Worked examples
- 3 TB = 3.000000e+12 B
- 12.5 TB = 1.250000e+13 B
- 75 TB = 7.500000e+13 B
Terabytes to Bytes table
| Terabytes | Bytes |
|---|---|
| 1 TB | 1.000000e+12 B |
| 2 TB | 2.000000e+12 B |
| 5 TB | 5.000000e+12 B |
| 10 TB | 1.000000e+13 B |
| 20 TB | 2.000000e+13 B |
| 25 TB | 2.500000e+13 B |
| 50 TB | 5.000000e+13 B |
| 100 TB | 1.000000e+14 B |
| 250 TB | 2.500000e+14 B |
| 500 TB | 5.000000e+14 B |
| 1,000 TB | 1.000000e+15 B |
Common questions
Is TB to B exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Bytes to Terabytes converter.
Mistakes to avoid
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Background
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
For any value, use the Terabytes to Bytes Converter or browse all data storage converters.
Run your own numbers: Terabytes to Bytes Converter