Is my input uploaded?

No. This website tool runs in your browser. Only the optional public API version sends input to the authenticated API route.

Can I use this in an application?

Yes. The Developers documentation lists the authenticated endpoint, request parameters and response example.

Should I verify the result?

Yes. Deterministic tools are designed for repeatable results, but format-specific or heuristic output should still be checked for your use case.

Converters

File Size Formatter

Convert a byte count into readable binary or decimal file-size units.

Free foreverRuns in your browserNo sign-up

BytesDecimal placesUnit system

Result

Enter your values and select format size.

About the File Size Formatter

File Size Formatter is a focused browser-based utility. Convert a byte count into readable binary or decimal file-size units.

The calculation runs locally in your browser, so the supplied value is not uploaded to ToolsOnDuty. The same capability is also available through the authenticated developer API.

Key features

Fast local processing with explicit validation
Copy-ready structured result
No account, upload or paid data provider required

How to use

1Enter a non-negative byte count.
2Choose any available conversion or formatting options.
3Run the tool and review a readable size and unit.

Examples

File Size Formatter example

Input: a non-negative byte count

Output: a readable size and unit

Frequently asked questions

Is my input uploaded?: No. This website tool runs in your browser. Only the optional public API version sends input to the authenticated API route.
Can I use this in an application?: Yes. The Developers documentation lists the authenticated endpoint, request parameters and response example.
Should I verify the result?: Yes. Deterministic tools are designed for repeatable results, but format-specific or heuristic output should still be checked for your use case.