File Size Calculator

Convert and calculate file sizes

🔒 This tool runs fully in your browser. No files or data are uploaded.
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Converted Size
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Size in Bytes

How to Use

  1. Enter the file size
  2. Select the current unit (From Unit)
  3. Select the unit you want to convert to (To Unit)
  4. Click "Convert Size" to see the converted size

FAQ

  • How are file sizes calculated?
    File sizes are calculated using binary units: 1 KB = 1024 bytes, 1 MB = 1024 KB, 1 GB = 1024 MB, 1 TB = 1024 GB.
Note: This calculator uses binary (1024-based) units, which is standard for computer storage. Decimal (1000-based) units are sometimes used for data transfer rates.