File Size Converter
Use File Size Converter on AboveTool to compress, pack, or estimate sizes in your browser — free, private, no signup.
File Size Converter
Used to convert file sizes between bytes, KB, MB, GB, and TB instantly.
About File Size Converter
File Size Converter is used to convert file sizes between bytes, KB, MB, GB, and TB instantly. It applies the standard 1024-based (binary) or 1000-based (decimal) conversion factors between units. Storage devices use decimal (1 GB = 1,000 MB) while operating systems often show binary (1 GiB = 1,024 MiB) — this causes the apparent "missing space" on new drives. File Size Converter runs free in your browser at abovetool.com — no signup required.
How to use
- Paste text or upload files depending on the tool.
- Click the primary action to minify, gzip, zip, estimate, or generate config.
- Copy or download results — processing stays in your browser.
Features
- Text minify, gzip probes, ZIP create/inspect/extract
- Ratio and bandwidth estimates with local CompressionStream
- Config sketches for nginx, Apache, Express, Vite, and more
- Dedicated gzip/CSS/font/PWA tools keep their own UIs
Frequently asked questions
What does File Size Converter do?
File Size Converter is used to convert file sizes between bytes, KB, MB, GB, and TB instantly.
How does File Size Converter work?
It applies the standard 1024-based (binary) or 1000-based (decimal) conversion factors between units.
Any tips for using this tool?
Storage devices use decimal (1 GB = 1,000 MB) while operating systems often show binary (1 GiB = 1,024 MiB) — this causes the apparent "missing space" on new drives.
Is File Size Converter free on AboveTool?
Yes. File Size Converter is free to use on abovetool.com with no account required.