How to use File Size Converter

Instantly convert between Bytes, KB, MB, GB, TB and PB. Perfect for understanding storage sizes. Use it when you need a quick result without installing a separate application.

Enter or select the information required by File Size Converter.
Review the options before running the tool.
Check the result and copy or download it if needed.

Privacy and limitations

This tool runs in your browser and does not require an account. Results depend on the input, browser capabilities and device memory, so review important output before relying on it.

What is File Size Converter?

Instantly convert between Bytes, KB, MB, GB, TB and PB. Perfect for understanding storage sizes.

File Size Converter is part of Smart2Office's suite of free browser-based productivity tools. It is designed to handle an everyday task that would otherwise require installing dedicated desktop software or paying for a subscription service. Open the page, use the tool, close it — nothing to set up, nothing to maintain, and nothing to pay.

The tool runs on any modern device — Windows PC, Mac, iPhone, Android phone or tablet — directly in your web browser. There is no version to update, no operating system compatibility issue, and no licence to renew.

✅ Key Features

Results update instantly as you type
Covers all major international unit systems
Accurate to 6 decimal places
Works offline after initial page load

💼 When to Use This Tool

Converting measurements for international recipes or projects
Unit conversions for science, engineering or academic assignments
Quickly comparing a measurement across different systems

Tips for Best Results

For cooking, note that volume and weight differ — 1 cup of flour does not weigh the same as 1 cup of water.
Always specify the unit system in documents shared internationally to prevent ambiguity.
Quick temperature check: 0°C = 32°F, 100°C = 212°F, 37°C = 98.6°F (normal body temperature).

Technical Details

Conversion factors: NIST / SI reference tables. Precision: 6 decimal places. No external API calls — works fully offline.

Frequently Asked Questions

How accurate are the conversions?

All conversions use precise internationally recognised factors accurate to at least 6 decimal places, sourced from NIST and SI references.

Does it work offline?

Yes. Once the page loads, conversions work without internet — all calculations happen in your browser.

How many decimal places are shown?

Results show up to 6 significant decimal places by default, adjusting automatically for very small or large values.

Which unit systems are covered?

Both SI (metric) and imperial/US customary systems are covered. Temperature includes Celsius, Fahrenheit and Kelvin.

Can I convert multiple values at once?

The tool converts one value at a time. For bulk conversions, a spreadsheet formula is more efficient.

🔒 Your Privacy & Security — Unit conversions are computed locally in your browser. Nothing is transmitted to any server. Smart2Office does not track what you process, does not store output files, and does not share your data with third parties. What you create belongs entirely to you.

💾 File Size Converter