File Size Converter
Convert between bytes, KB, MB, GB, TB and PB.
Convert now| B | 1,048,576 |
| KB | 1,024 |
| MB | 1 |
| GB | 0.000977 |
| TB | 0.000001 |
| PB | 0 |
How it works
Enter value
Enter any number.
Choose unit & base
Source unit and base 1024 or 1000.
Read all units
Table showing all sizes at once.
Benefits
Good to know about this tool
Converts file sizes between byte, KB, MB, GB, TB and PB, using base 1024 or 1000.
Because operating systems and drive manufacturers use different bases, which causes confusion.
- Compare storage capacity figures
- Estimate download sizes
- Check drive capacity in different units
- Drives typically use base 1000, memory typically uses base 1024
- Round displayed values to 2-3 decimals for practical use
Frequently Asked Questions
What's the difference between base 1024 and 1000?
Base 1024 (binary) is used by operating systems like Windows, base 1000 (decimal) is typically used by drive manufacturers.
Why does Windows show a different size than the manufacturer?
Because Windows uses base 1024, while drive manufacturers typically state base 1000.
Are my values stored?
No, the conversion happens entirely locally in your browser.
The information, templates, scripts, calculations and recommendations provided are intended for educational and assistance purposes only. Always review and test any generated result before production use. IT Smart Service accepts no liability for misuse, data loss, outages, security incidents, or legal, financial or technical damages arising from incorrect or improper use. Responsibility for validation, testing and deployment decisions rests with the user.
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