File size calculator
Converts bytes and decimal or binary units with their explicit bases.
Processed on this device. The content is not uploaded to a server.
How to use this tool
- Indicates the size and unit of origin.
- Press Calculate Size and compare decimal and binary units.
- Copy or download the table.
What you should know
Non-negative sizes up to the JavaScript safe range. Allows fractions as theoretical conversion. It does not predict how much a ZIP will compress or the weight of a photo.
Is my data sent to a server?
No. Processing occurs on this device. Review the scope and limits before using the result.