Free Hash Generator — MD5, SHA-1, SHA-256, SHA-512
Generate cryptographic hashes instantly. Compare hashes to verify file integrity. Everything runs in your browser.
Text
Type or paste text to generate all hashes instantly.
File
Drop a file to calculate all hashes in your browser.
Compare
Paste two hashes to check whether they match.
Hashing is one-way — you cannot reverse a hash back to the original text.
Frequently Asked Questions
What is a hash?
A hash is a fixed-length fingerprint created from data. Even a tiny change in the input produces a completely different hash, which makes hashes useful for integrity checks and comparisons.
Which algorithm should I use?
SHA-256 is the best general-purpose choice today for integrity checks and modern workflows. SHA-512 is also strong. MD5 and SHA-1 are mainly useful for compatibility with older systems and should not be used for new security-sensitive designs.
Can a hash be reversed?
No. Hashing is designed to be one-way. You can verify whether input matches a hash by hashing it again, but you cannot directly reconstruct the original value from the hash alone.
Why do I get different hashes for the same file?
If two hashes differ, the underlying bytes are not identical. Common causes include different file versions, line-ending changes, metadata changes in exported files, or hashing a different encoding of the same visible text.
Is my data sent anywhere?
No. All hashing and comparison happens locally in your browser. Your text and files are not uploaded to any server.