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Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text instantly. All processing in your browser.

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Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text input. Uses the Web Crypto API for SHA hashes.

Input Text

How to Use Hash Generator

  1. 1

    Enter your text

    Type or paste the text you want to hash into the input field.

  2. 2

    Generate hashes

    Click the Generate Hashes button to compute all four hash algorithms simultaneously.

  3. 3

    Copy results

    Click the Copy button next to any hash to copy it to your clipboard.

Frequently Asked Questions

This tool generates MD5, SHA-1, SHA-256, and SHA-512 hashes. SHA hashes are computed using the browser's native Web Crypto API for maximum performance and security.

MD5 is considered cryptographically broken for security purposes. It should not be used for password hashing or security-critical applications. However, it is still useful for checksums and non-security data integrity checks.

No. All hash computation happens locally in your browser. Your text is never sent to any server.

This tool currently hashes text input. For file hashing, paste the file contents into the text area. File drag-and-drop hashing may be added in a future update.

For most purposes, SHA-256 is the recommended choice. It offers a good balance of security and performance. SHA-512 provides even more security for sensitive applications.

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Understanding Cryptographic Hash Functions

A hash function takes arbitrary input and produces a fixed-size output (the "digest"). SHA-256 always produces 256 bits (64 hex characters) whether the input is a single character or an entire database. Three properties make hashes useful: determinism (same input always produces the same output), avalanche effect (changing one bit of input changes ~50% of output bits), and preimage resistance (you cannot reverse-engineer the input from the hash).

Which Hash Algorithm Should You Use?

MD5 (128-bit) is cryptographically broken — researchers can create collisions (different inputs that produce the same hash) in seconds. SHA-1 (160-bit) was cracked in 2017 by Google's SHAttered attack. SHA-256 (256-bit) is the current standard for most applications, used in TLS certificates, Bitcoin, and git commit hashing. SHA-512 (512-bit) is equally secure but faster on 64-bit processors due to its internal structure, making it a strong choice for server-side applications.

Hashes for Password Storage

General-purpose hash functions like SHA-256 are too fast for password storage — an attacker can compute billions of SHA-256 hashes per second on a modern GPU. Purpose-built password hashing algorithms like bcrypt, scrypt, and Argon2 are intentionally slow and memory-hard, making brute-force attacks impractical. If you are building authentication, always use a dedicated password hashing library — never raw SHA-256.