Hash Generator
SecurityMD5, SHA-1, SHA-256, SHA-512
- Runs in your browser
- Nothing is sent to a server
- No sign-up
Herramienta de generación de hash
Hash Generator: SHA-256, MD5, SHA-1 and More
Cryptographic hashes are one-way functions that convert any input into a fixed-length string. They're used to verify data integrity, store passwords securely, and generate digital signatures.
Our generator supports the most common algorithms: MD5 (legacy, not recommended for security), SHA-1 (legacy), SHA-256 and SHA-512 (current standard). All are computed locally in your browser.
SHA-256 is the current recommended standard for most applications. It's used in Bitcoin, TLS/SSL certificates, and JWT signatures. Its 256-bit output makes it collision-resistant.
How does it work?
- Choose the algorithm
Select between MD5, SHA-1, SHA-256, or SHA-512 based on your use case.
- Enter the input text
Type or paste the text you want to hash.
- Copy the result
The hash is generated instantly. Copy it to your clipboard with one click.
Frequently Asked Questions
Which hash algorithm should I use?
For new applications, use SHA-256 or SHA-512. Avoid MD5 and SHA-1 for security (they have known collisions). For passwords specifically, use bcrypt, scrypt, or Argon2 — not simple hashes.
Can I reverse a hash to get the original text?
No. Hashes are one-way functions by design. However, common texts can be found via rainbow tables. Never hash passwords without a salt.
Why do I get the same hash for the same text?
That's a fundamental property of hashes: same input, same output. That's why they're used for integrity verification — any change to the input produces a completely different hash.