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Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files.

Your data stays in your browser — nothing is uploaded to any server.

or try sample data

What is a Hash?

A cryptographic hash function takes input data of any size and produces a fixed-size output (the "hash" or "digest"). The same input always produces the same hash, but even a tiny change in input creates a completely different output. Hashes are used for data integrity checks, password storage, digital signatures, and checksums.

  • MD5 — 128-bit hash. Fast but considered cryptographically broken. Still used for checksums.
  • SHA-1 — 160-bit hash. Deprecated for security, still common in legacy systems.
  • SHA-256 — 256-bit hash from the SHA-2 family. The most widely used secure hash today.
  • SHA-384 / SHA-512 — longer hashes for higher security requirements.
  • File hashing — hash files up to 50 MB directly in your browser.
  • Hash All — compute all five algorithms at once for easy comparison.

Frequently Asked Questions

How do I generate a hash online?

Enter your text in the input field and select a hash algorithm (MD5, SHA-1, SHA-256, or SHA-512). The tool instantly computes the hash using your browser's built-in Web Crypto API. The hash appears as a hexadecimal string you can copy.

What is a hash function?

A cryptographic hash function takes any input and produces a fixed-size string of characters (the hash or digest). The same input always produces the same hash, but even a tiny change in input produces a completely different hash. Hashes are used for data integrity verification, password storage, digital signatures, and checksums.

Which hash algorithm should I use?

For general-purpose hashing and security, use SHA-256 — it's widely supported and considered secure. Use SHA-512 for stronger security requirements. Avoid MD5 and SHA-1 for security-critical applications as they have known vulnerabilities, though they're still useful for checksums and non-security purposes.

Is my data safe when generating hashes here?

Yes. All hashing is done entirely in your browser using the Web Crypto API. Your input text is never sent to any server, making it safe to hash passwords, API keys, and other sensitive data.

Can I use this to verify file integrity?

This tool hashes text input. For file integrity verification, you would compute the file's hash and compare it to the expected hash. If both match, the file hasn't been modified. SHA-256 checksums are the standard for verifying downloads and file integrity.

What is the difference between MD5, SHA-256, and SHA-512?

MD5 produces a 128-bit (32-character) hash and is fast but cryptographically broken. SHA-256 produces a 256-bit (64-character) hash and is the current standard for most security applications. SHA-512 produces a 512-bit (128-character) hash and offers higher security but is slightly slower. All three always produce the same output for the same input.