Free SHA-256 / MD5 Hash Generator Online
Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text instantly with this free online tool by US AI. Perfect for verifying file checksums, checking data integrity, creating Gravatar hashes, signing API payloads and testing salted password hashes. It runs completely in your browser — no signup, no download, works on mobile and desktop.
📖 How to use
- Type any text, pick SHA-256, SHA-1, SHA-384 or SHA-512, and press Generate Hash.
- Open the tool with the button above — it loads instantly.
- Your work stays on your device; nothing is uploaded anywhere.
✨ Why use this tool?
US AI's free SHA-256 / MD5 hash generator is fast, private and 100% free forever. Developers use it to verify download checksums and API payloads, blockchain and crypto testers use it for quick digests, and students use it to learn how one-way hashing works. Bookmark this page and share it with anyone who needs it.
❓ Frequently asked questions
What is a hash?
A hash is a fixed-length "fingerprint" of any text. The same input always produces the same hash, but you cannot reverse a hash back to the original text — that is why hashes are used for checksums and password storage.
Which algorithms are supported?
MD5, SHA-1, SHA-256, SHA-384 and SHA-512 — the five most-used hashing algorithms, all computed instantly in your browser.
Is my text uploaded anywhere?
No. Everything is calculated locally using your browser's built-in Web Crypto API. Your text never leaves your device.
Which algorithm should I choose?
SHA-256 is the modern default for security and integrity checks. Use MD5 or SHA-1 only for legacy compatibility (e.g. matching old checksums) — they are no longer considered secure.
Can I verify a file's checksum?
For text files you can paste the content directly. For binary files, use a checksum tool on your computer to get the file's hash, then compare it here with a hash of the same text content.