What is a hash function?

A hash function takes input data and produces a fixed-length string of characters. The same input always yields the same hash, but you cannot reverse a hash back to the original data.

Which hash should I use?

For security, use SHA-256 or SHA-512. MD5 and SHA-1 are considered broken for cryptographic purposes but are still useful for checksums and non-security tasks.

This tool hashes text. For files, read them as text or use a dedicated file hashing tool. For small files under a few megabytes you can paste contents here.

Is my input sent anywhere?

No. Hashing runs entirely in your browser using the Web Crypto API and a local MD5 implementation. Your text never leaves your device.

Can I use these hashes for password storage?

No. Plain MD5 and SHA hashes are not safe for password storage — they are too fast and vulnerable to rainbow tables and GPU cracking. Use bcrypt, scrypt or Argon2 with a per-password salt.

Why is MD5 considered broken?

MD5 has practical collision attacks — two different inputs can produce the same hash. This breaks integrity checks for security purposes, though MD5 remains fine for non-adversarial checksums like verifying a file copy.

Hash Generator

Compute MD5, SHA-1, SHA-256 and SHA-512 hashes for any text — all four at once. SHA algorithms use the browser's native Web Crypto API; MD5 runs through a local implementation. Everything happens on your device.

How to use

Enter your text

Type or paste the text you want to hash.

Click Hash Text

All four hash algorithms run simultaneously.

Read the results

See the MD5, SHA-1, SHA-256 and SHA-512 hashes side by side.

Copy any hash

Copy the hash you need to your clipboard.

Text to hash

Features

Four hash algorithms

MD5, SHA-1, SHA-256 and SHA-512 computed at once.

Web Crypto API

SHA hashes use the browser's native Web Crypto API for speed and security.

Local MD5 implementation

MD5 is computed locally since browsers do not expose it natively.

Side-by-side results

All four hashes shown together for easy comparison.

Common use cases

Generate a checksum for a string
Verify the integrity of data
Create a hash for a password (non-security use)
Compare hash outputs from different algorithms

Frequently Asked Questions

Related tools

UUID Generator

JWT Encoder

JWT Decoder

Open Source License Generator