File Hash Calculator
Verify downloads: checksum any file without uploading it.
Runs 100% in your browser — nothing is ever uploaded.
What is File hash?
Drop any file and get its MD5, SHA-1 and SHA-256 checksums. Files never leave your device — hashing runs 100% locally. Drop a file and it is processed instantly — files are read locally and never uploaded anywhere. It's completely free, works in any modern browser and requires no sign-up — everything runs locally on your device, so your data never leaves your computer.
How to use File hash
- Open File hash — no installation or registration required.
- Drag & drop your file (or click to browse). It is read locally and never uploaded.
- Adjust the available options if you need to.
- Download the processed result straight to your device.
Frequently asked questions
Is File hash really free?
Yes — File hash is 100% free with no limits, no watermarks and no registration. You can use it as often as you like, on as many files or inputs as you need.
Is my data safe when I use File hash?
Absolutely. File hash runs entirely in your browser using JavaScript — your input is processed on your own device and is never uploaded to any server.
Does File hash work on mobile devices?
Yes. File hash works in any modern browser on desktop, tablet and mobile (Chrome, Firefox, Safari, Edge) — there is no app to install.
Is my data uploaded anywhere?
No. Every DataForge tool runs entirely in your browser. Text and files are processed locally and never sent over the network.
Are the conversions accurate?
Yes — we use the same battle-tested libraries developers use in production (native Web Crypto for hashes, js-yaml for YAML), so output matches what your toolchain produces.
Is there a size limit?
No hard limit. Processing happens on your machine, so even large documents convert in milliseconds.