Storage conversion form
Calculation history
Formula used
A decimal gigabyte uses powers of one thousand. A binary gibibyte uses powers of 1024. The two results therefore differ for identical byte counts.
How to use this calculator
- Enter a nonnegative storage value.
- Select the input and output units.
- Choose precision and optional overhead.
- Add batch values when needed.
- Press the calculate button.
- Copy, export, or print the results.
Decimal and binary unit comparison
| Unit | Bytes | Standard |
|---|---|---|
| 1 KB | 1,000 | SI decimal |
| 1 KiB | 1,024 | IEC binary |
| 1 MB | 1,000,000 | SI decimal |
| 1 MiB | 1,048,576 | IEC binary |
| 1 GB | 1,000,000,000 | SI decimal |
| 1 GiB | 1,073,741,824 | IEC binary |
| 1 TB | 1,000,000,000,000 | SI decimal |
| 1 TiB | 1,099,511,627,776 | IEC binary |
Example calculations
| Bytes | Decimal GB | Binary GiB |
|---|---|---|
| 1,000,000,000 | 1 GB | 0.931323 GiB |
| 1,073,741,824 | 1.073742 GB | 1 GiB |
| 500,000,000 | 0.5 GB | 0.465661 GiB |
| 8,000,000,000 | 8 GB | 7.450581 GiB |
Frequently asked questions
How many bytes are in one gigabyte?
One decimal gigabyte contains 1,000,000,000 bytes. Storage manufacturers commonly use this standard. It follows powers of one thousand.
How many bytes are in one gibibyte?
One gibibyte contains 1,073,741,824 bytes. This is an IEC binary unit. It follows powers of 1024.
Why are GB and GiB different?
GB uses decimal powers. GiB uses binary powers instead. Their byte totals differ noticeably.
Can this calculator convert backward?
Yes, select GB or GiB first. Then choose bytes as output. The calculator performs reverse conversions.
Can I enter scientific notation?
Yes, values like 1e12 are accepted. Commas are also removed safely. Negative values remain blocked.
What does storage overhead mean?
Overhead estimates reserved or unavailable capacity. It may represent formatting losses. The calculator shows remaining usable storage.
Which standard should I choose?
Choose GB for decimal specifications. Choose GiB for binary measurements. Match the standard used by your source.
Can I convert several values together?
Yes, use the batch field. Separate values with lines or commas. Up to 200 entries are processed.
What is the custom factor option?
It defines bytes per custom unit. Select custom as either unit. Then enter a positive factor.
How accurate are the results?
Calculations use standard conversion factors. You control displayed decimal precision. Full precision is also shown.
Can I save the calculated results?
Yes, download CSV or PDF files. Printing is also available. Recent calculations remain in browser history.