tofo-boxtools

File Size Converter

developer

Convert file sizes between bytes, KB, MB, GB, TB, and more. Shows all units at once.

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Options

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Image Tool

Try Image Compressor

Reduce image size up to 80% — free, instant, no upload needed.

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What is File Size Converter?

File Size Converter is a free online developer utility. Convert file sizes between bytes, KB, MB, GB, TB, and more. Shows all units at once. It runs entirely in your browser, making it fast and accessible without any setup or installation.

How to Use File Size Converter

  1. 1

    Enter the value you want to convert into the input field.

  2. 2

    Click the Run button to process your input.

  3. 3

    Copy the result from the output panel using the Copy button, or download it as a text file.

Common Use Cases

  • →Speeding up repetitive development tasks.
  • →Validating and transforming data during debugging.
  • →Generating test data for development and QA environments.

Frequently Asked Questions

Is File Size Converter free to use?

Yes, File Size Converter is completely free with no usage limits. No account, signup, or payment is required.

Is my data sent to a server?

No. File Size Converter runs entirely in your browser. Your data never leaves your device and is never sent to any server.

Does this tool work on mobile devices?

Yes, File Size Converter is fully responsive and works on smartphones and tablets. It runs in any modern browser including Chrome, Firefox, Safari, and Edge.

🖼️
Image Tool

Try Image Compressor

Reduce image size up to 80% — free, instant, no upload needed.

→
🖼️
Image Tool

Try Image Compressor

Reduce image size up to 80% — free, instant, no upload needed.

→