Hash Generator

Free online hash generator. Create MD5, SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic hashes from any text instantly — no signup, no data stored.

Input Text

Generated Hash

Hash Algorithm:

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What is a Hash Generator?

A hash generator converts any input text into a fixed-length hexadecimal string using a cryptographic hashing algorithm. Hashes are one-way functions — the same input always produces the same output, but the original text cannot be recovered from the hash. They are used for data integrity checks, password storage, digital signatures, and verifying file authenticity.

Supported Hash Algorithms

MD5

Produces a 128-bit (32 hex character) hash. Fast and widely used for checksums and non-security data integrity checks. Not recommended for passwords.

SHA-1

Produces a 160-bit (40 hex character) hash. Historically used in SSL certificates and Git. Now deprecated for security-sensitive uses.

SHA-256

Produces a 256-bit (64 hex character) hash. Part of the SHA-2 family. The industry standard for secure hashing, used in TLS, Bitcoin, and more.

SHA-384

Produces a 384-bit (96 hex character) hash. A truncated version of SHA-512, offering strong security with slightly smaller output.

SHA-512

Produces a 512-bit (128 hex character) hash. The strongest in the SHA-2 family. Ideal for applications requiring maximum hash strength.

Frequently Asked Questions

What is the difference between MD5 and SHA-256?

MD5 produces a shorter 128-bit hash and is faster but has known collision vulnerabilities. SHA-256 produces a 256-bit hash and is cryptographically secure, making it the preferred choice for security-sensitive applications.

Can I reverse a hash back to the original text?

No. Hashing is a one-way process. There is no algorithm to reverse a hash to its original input. This property is what makes hashes useful for password storage and data integrity.

Which hash algorithm should I use?

For general checksums or non-security purposes, MD5 is fine. For any security-sensitive use like password hashing or digital signatures, use SHA-256 or SHA-512.

Is my text sent to a server?

No. All hashing is performed entirely in your browser using the Web Crypto API. Your input text never leaves your device.

What is a hash used for in practice?

Hashes are used to verify file downloads, store passwords securely, sign software releases, generate API keys, and detect data tampering in databases and network communications.