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file🔒 100% Client-Side⚡ No Upload Required

File Size Converter

Convert file size measurements across Bytes, Kilobytes, Megabytes, Gigabytes, and Terabytes in-browser.

File Utilities Suite

ZIP Content Viewer CSV Table Viewer CSV to JSON Converter JSON to CSV Converter XML Formatter XML to JSON Converter File Checksum Generator File Size Converter MIME Type Detector File Hash Checker

Workspace Inputs

File Size Value

Source Unit

Result / Output

Unit Conversion Table

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What is File Size Converter?

File size conversion translates sizes between different powers of bytes, using either binary base (1024) or decimal base (1000).

Convert data units in-browser.

How to use the File Size Converter

1Input size amount.
2Choose source unit.
3Review conversions.

Frequently Asked Questions

What is the difference between binary and decimal bases?

Operating systems use binary (1024 B = 1 KB) while storage manufacturers use decimal (1000 B = 1 KB).

Related Tools

File Checksum Generator

Generate cryptographic checksums (MD5, SHA-1, SHA-256) of uploaded files locally using browser APIs.

ZIP Content Viewer

Inspect files, directory paths, and compressed sizes inside ZIP archives locally without extracting or uploading.

CSV Table Viewer

Format, view, and read CSV files inside a clean interactive table grid. No uploads to server.

CSV to JSON Converter

Convert CSV files or comma-separated strings to structured JSON arrays online. Fast client-side conversion.