Bytes to gigabytes
gigabytes = bytes × 1e-9
Reverse: gigabytes to bytes
How to convert bytes to gigabytes
One byte is 1e-9 gigabytes, so multiply the number of bytes by 1e-9. For example, 20 bytes is 20 × 1e-9 = 2e-8 gigabytes. To go back, divide by the same number, or multiply by 1,000,000,000.
Quick estimate
Multiplying by about 1e-9 gets within 0.0% of the exact answer, which is enough to check that a result makes sense.
Where it comes up
Data conversions come up when comparing storage on phones and drives, file and download sizes, and internet plans.
| bytes | gigabytes |
|---|---|
| 1 b | 1e-9 gb |
| 2 b | 2e-9 gb |
| 3 b | 3e-9 gb |
| 4 b | 4e-9 gb |
| 5 b | 5e-9 gb |
| 6 b | 6e-9 gb |
| 7 b | 7e-9 gb |
| 8 b | 8e-9 gb |
| 9 b | 9e-9 gb |
| 10 b | 1e-8 gb |
| 11 b | 1.1e-8 gb |
| 12 b | 1.2e-8 gb |
| 13 b | 1.3e-8 gb |
| 14 b | 1.4e-8 gb |
| 15 b | 1.5e-8 gb |
| 16 b | 1.6e-8 gb |
| 17 b | 1.7e-8 gb |
| 18 b | 1.8e-8 gb |
| 19 b | 1.9e-8 gb |
| 20 b | 2e-8 gb |
| 25 b | 2.5e-8 gb |
| 30 b | 3e-8 gb |
| 40 b | 4e-8 gb |
| 50 b | 5e-8 gb |
| 60 b | 6e-8 gb |
| 70 b | 7e-8 gb |
| 75 b | 7.5e-8 gb |
| 80 b | 8e-8 gb |
| 90 b | 9e-8 gb |
| 100 b | 1e-7 gb |
| 120 b | 1.2e-7 gb |
| 150 b | 1.5e-7 gb |
| 200 b | 2e-7 gb |
| 250 b | 2.5e-7 gb |
| 300 b | 3e-7 gb |
| 400 b | 4e-7 gb |
| 500 b | 5e-7 gb |
| 750 b | 7.5e-7 gb |
| 1,000 b | 0.000001 gb |
| 1,500 b | 0.0000015 gb |
| 2,000 b | 0.000002 gb |
| 5,000 b | 0.000005 gb |
| 10,000 b | 0.00001 gb |
Questions
How many gigabytes are in a byte?
1e-9 gigabytes.
How do I convert bytes to gigabytes in a spreadsheet?
Put the value in A1 and type =A1*1e-9, then fill the formula down the column.
Are the values in the table exact?
They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.