Skip to main content
Alona Tool – Free Online Tools

File Size Converter

Runs in Your Browser

Convert between bytes, KB, MB, GB and TB using either the 1024 (binary) or 1000 (decimal) standard.

Browser-based: this tool works on your device and does not send your input to an Alona Tool server. See the Privacy Policy for details.
Fast Processing

Loading File Size Converter… This tool is an interactive page and needs JavaScript enabled in your browser.

Example Usage & Test Cases

Upload limit
Input Scenario:
5 MB, 1024 standard
Generated Result:
5,242,880 B, 5,120 KB, 5 MB, 0.004883 GB …

How It Works

1

Enter a size and choose its unit.

2

Choose the 1024 (binary) or 1000 (decimal) standard.

3

Read the equivalent in every unit.

Frequently Asked Questions

Use 1024 for how most operating systems and file managers report sizes, and 1000 for how drive and network vendors usually advertise capacity.

Good to Know

Common uses

  • Checking whether a file fits an upload limit
  • Comparing advertised and reported storage

Limitations and notes

  • Very small results are rounded to six decimal places.
  • Units above TB are not included.

Related Tools

Popular

Text to Binary Converter

Convert text to binary

Open

Number Base Converter

Binary, octal, decimal and hex

Open

Roman Numeral Converter

Numbers to Roman numerals

Open Popular

Number to Words Converter

Write any number in words

Open

Free Online File Size Converter

Operating systems and storage makers count sizes differently, which is why a "500 GB" drive shows less space. Choose the standard that matches your situation and see every unit at once.

Key Highlights:

  • Free to use, no signup
  • Instant results
  • Processed in your browser
  • Works on mobile and desktop