A hash generator converts any text into a fixed-length fingerprint using algorithms like SHA-256, SHA-512, SHA-1, or MD5. Hashing is a one-way process: the same input always produces the same hash, but you cannot reverse the hash back into the original text.
Developers use hashes to verify file integrity (checksums), store passwords securely, and detect duplicate data. This tool runs entirely in your browser — your input is never sent to a server.
SHA-256 vs MD5 vs SHA-1
SHA-256 is the modern standard — secure and widely used for passwords, certificates, and blockchain. SHA-512 is its stronger 64-bit variant. SHA-1 and MD5 are faster but considered cryptographically broken, so they should only be used for checksums and non-security tasks.
For file verification, generate the hash of a downloaded file and compare it to the publisher's checksum — if they match, the file is intact.
How to Use
Type or paste any text into the input box
Choose the algorithm: SHA-256, SHA-512, SHA-1, or MD5
The hash appears instantly — copy it with one click
Features
🔒 Private by DesignEverything runs locally in your browser. Nothing is uploaded.
🧮 4 AlgorithmsSHA-256, SHA-512, SHA-1, and MD5 in one tool.
⚡ Real-TimeHashes update instantly as you type.
🆓 100% FreeUnlimited hashing. No signup, no limits.
Frequently Asked Questions
What is SHA-256 used for?
SHA-256 is used for password hashing, file integrity checks, digital signatures, and blockchain technology. It produces a 64-character hexadecimal fingerprint.
Can a hash be reversed?
No. Hashing is one-way by design. The only way to "reverse" a hash is brute-force guessing inputs until one matches, which is impractical for strong algorithms like SHA-256.
Is MD5 still safe?
MD5 is not safe for security — collisions have been found. Use it only for non-critical checksums. For passwords and security, use SHA-256 or better.
Does this tool upload my data?
No. The tool runs 100% in your browser using the Web Crypto API. Your text never leaves your device.