What is a hash and what is it used for?

A hash is a fixed-length fingerprint of data produced by a one-way function. It's used to verify that a file hasn't changed, compare values without revealing them, and securely store passwords.

Is MD5 still safe to use?

MD5 is fine for non-security checksums but is broken for cryptographic use — collisions can be generated. Use SHA-256 for integrity and bcrypt for passwords instead.

Are my text and files uploaded to compute the hash?

No. All hashes are computed locally in your browser, so the original text or file never leaves your device.

All tools/Convert

Hash Generator

Runs locally

Generate MD5, SHA-1, SHA-256, and bcrypt hashes locally. Output is computed in real-time.

Input

Output Hash

Generated hash appears here.

Generate cryptographic hashes — MD5, SHA-1, SHA-256, SHA-512 and bcrypt — from any text or file, right in your browser. Hashes are one-way fingerprints used to verify integrity, compare files, and store passwords. Nothing you hash is ever uploaded.

How to generate a hash

1Type or paste your text, or drop a file to hash its contents.
2See MD5, SHA-1, SHA-256 and SHA-512 digests computed instantly.
3Copy any digest, or use bcrypt for salted password hashing.

Which hash should you use?

For verifying file integrity, SHA-256 is the modern default. MD5 and SHA-1 are fast but cryptographically broken — fine for checksums, not for security. For storing passwords, use bcrypt, which is deliberately slow and salted to resist brute-force attacks. This tool computes all of them locally.

Frequently asked questions

What is a hash and what is it used for?: A hash is a fixed-length fingerprint of data produced by a one-way function. It's used to verify that a file hasn't changed, compare values without revealing them, and securely store passwords.
Is MD5 still safe to use?: MD5 is fine for non-security checksums but is broken for cryptographic use — collisions can be generated. Use SHA-256 for integrity and bcrypt for passwords instead.
Are my text and files uploaded to compute the hash?: No. All hashes are computed locally in your browser, so the original text or file never leaves your device.