How to Convert Gigabytes to Bits (GB to bit)
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 gigabytes into bits by hand, with examples and a quick-reference table.
The conversion
To convert gigabytes to bits, multiply the value by 8.000000e+09. To go the other way, divide by the same number (or multiply by 1.250000e-10). For a quick estimate, multiply by about 8,000,000,000.
Bits = gigabytes × 8.000000e+09
Worked examples
- 3 GB = 24,000,000,000 bit
- 12.5 GB = 100,000,000,000 bit
- 75 GB = 600,000,000,000 bit
Gigabytes to Bits table
| Gigabytes | Bits |
|---|---|
| 1 GB | 8,000,000,000 bit |
| 2 GB | 16,000,000,000 bit |
| 5 GB | 40,000,000,000 bit |
| 10 GB | 80,000,000,000 bit |
| 20 GB | 160,000,000,000 bit |
| 25 GB | 200,000,000,000 bit |
| 50 GB | 400,000,000,000 bit |
| 100 GB | 800,000,000,000 bit |
| 250 GB | 2.000000e+12 bit |
| 500 GB | 4.000000e+12 bit |
| 1,000 GB | 8.000000e+12 bit |
Common questions
Is GB to bit 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 Bits to Gigabytes converter.
Mistakes to avoid
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Background
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.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
For any value, use the Gigabytes to Bits Converter or browse all data storage converters.
Run your own numbers: Gigabytes to Bits Converter