Hash Generator

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

Algorithm

Text to hash

What is a hash function?

A hash function takes input data of any size and produces a fixed-length string (the hash or digest). The same input always produces the same hash, but even a tiny change in input produces a completely different hash. Hash functions are one-way — you cannot reverse them.

How to use this tool

Choose Text or File mode.
Enter your text, or select a file.
Pick an algorithm (MD5, SHA-1, SHA-256, SHA-384, SHA-512).
Click Generate Hash.
Copy the result.

Algorithm comparison

MD5: 128-bit, fast, broken for security. Use for checksums only.
SHA-1: 160-bit, deprecated for security. Use for legacy compatibility.
SHA-256: 256-bit, recommended for most security uses.
SHA-384: 384-bit, stronger variant.
SHA-512: 512-bit, strongest of the SHA-2 family.

Common use cases

Verifying file integrity after download
Storing password hashes (with salt — never plain MD5/SHA)
Digital signatures and certificates
Detecting duplicate files
Blockchain and cryptocurrency

Privacy

Your text and files are hashed entirely in your browser. Nothing is uploaded to any server.

Frequently Asked Questions

Is this Hash Generator free?

Yes, completely free. No signup, no limits.

Is my data uploaded to a server?

No. All hashing happens entirely in your browser using the Web Crypto API. Your text and files never leave your device.

What is a hash?

A hash is a fixed-length string generated from input data. The same input always produces the same hash, but you cannot reverse a hash back to the original data. Hashes are used for integrity checks, password storage, and digital signatures.

Which algorithm should I use?

Use SHA-256 or SHA-512 for security-sensitive work. MD5 and SHA-1 are considered broken for cryptographic use — use them only for non-security checksums or legacy compatibility.

Can I hash a file?

Yes. Switch to File mode, select any file, and generate its hash. This is useful for verifying downloads or detecting duplicates.

Can I reverse a hash?

No. Cryptographic hashes are one-way functions. You cannot recover the original input from a hash (except by brute force, which is infeasible for strong algorithms).