Convert between file size units (B, KB, MB, GB, TB, PB). Binary (1024) and decimal (1000) modes.
Convert between file size units (B, KB, MB, GB, TB, PB). Binary (1024) and decimal (1000) modes. File Size Converter is a powerful, free online tool built for anyone looking for handy browser-based utilities. It's part of ToolHaven's Converter Tools collection — a suite of browser-based utilities designed to help you work faster without compromising your privacy.
Unlike cloud-based alternatives, File Size Converter processes everything locally on your device. Your data never leaves your browser — making it ideal for sensitive or confidential work. There are no file size limits imposed by server bandwidth, and results appear instantly without network delays.
Whether you need to file size, bytes, convert, binary, decimal, File Size Converter handles it with ease. No account required, no software to install — just open the tool in any modern browser (Chrome, Firefox, Safari, Edge) on desktop, tablet, or mobile and start working immediately.
Open File Size Converter and paste your code or data in the input field. Convert between file size units (B, KB, MB, GB, TB, PB).
File Size Converter converts your input in real time — select your desired output format or options and see the result update immediately. No waiting required.
Copy your File Size Converter result. Everything was processed locally in your browser — no account needed, no data stored.
For currency, prefer mid-market rates over advertised rates when accuracy matters.
Round only at the end; rounding intermediate steps compounds error.
Watch for binary vs decimal in data units (MB = 10^6 bytes, MiB = 2^20 bytes).
Convert between file size units (B, KB, MB, GB, TB, PB). Binary (1024) and decimal (1000) modes. File Size Converter runs entirely in your browser using JavaScript — your data is never uploaded to any server. The processing happens locally on your device, which means it's both fast and private.
Yes, File Size Converter is 100% free with no hidden costs. There's no login required, no account to create, no trial period, and no premium tier. You can use it as many times as you want.
Absolutely. File Size Converter processes everything locally in your browser. Your data never leaves your device — we have no server that could receive or store it. You can verify this by checking the Network tab in your browser's Developer Tools (F12) while using the tool.
Yes, File Size Converter is fully responsive and works on smartphones and tablets. The interface adapts to your screen size, and since all processing happens in your browser, it works on any device with a modern web browser.
No installation needed. File Size Converter runs directly in your web browser — Chrome, Firefox, Safari, Edge, or any modern browser. Just open the page and start using it immediately. There's nothing to download, install, or update.
