File Size Calculator

Convert between different file size units online. Free file size calculator tool for bytes, kilobytes, megabytes, gigabytes, and more.

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File Size Calculator

Quick Examples:

About File Size Calculator

Our File Size Calculator is a versatile online tool that helps you convert between different file size units. Whether you're working with storage devices, file transfers, or data analysis, this calculator provides quick and accurate conversions between bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes.

Key Features:

  • Multiple Unit Support: Convert between bytes (B), kilobytes (KB), megabytes (MB), gigabytes (GB), terabytes (TB), and petabytes (PB)
  • Real-time Calculation: See results instantly as you type
  • Precise Conversions: Uses binary (1024-based) calculations for accurate file size conversions
  • User-friendly Interface: Clean, intuitive design with easy-to-use controls
  • Quick Examples: Built-in examples to help you get started
  • Responsive Design: Works perfectly on desktop, tablet, and mobile devices
  • No Registration Required: Use the tool immediately without any sign-up

Perfect For:

  • Calculating storage requirements for files and folders
  • Understanding file sizes in different units
  • Planning storage capacity for devices and systems
  • Estimating download times and bandwidth usage
  • Comparing file sizes across different formats
  • Educational purposes and learning about data units

How to Use:

  1. Enter the file size value in the input field
  2. Select the unit of measurement from the dropdown menu
  3. Click "Calculate" to see all conversions
  4. Use the quick example buttons to try different values
  5. Clear the form to start a new calculation

Understanding File Size Units:

  • Byte (B): The smallest unit, typically represents one character
  • Kilobyte (KB): 1,024 bytes, commonly used for small files
  • Megabyte (MB): 1,048,576 bytes, standard for medium-sized files
  • Gigabyte (GB): 1,073,741,824 bytes, used for large files and storage
  • Terabyte (TB): 1,099,511,627,776 bytes, for very large storage capacities
  • Petabyte (PB): 1,125,899,906,842,624 bytes, for massive data storage

This tool is completely free to use and doesn't require any registration. All calculations are done in your browser, ensuring fast and secure processing. Start converting file sizes today!