Hash Generator

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text. Uses browser's Web Crypto API for secure hashing.

Last updated: June 1, 2026

Input Text

What is Hash Generator?

A hash generator creates fixed-length cryptographic digest values (fingerprints) from input text using algorithms like MD5, SHA-1, SHA-256, and SHA-512. Hash functions have a critical property: the same input always produces the same hash, but it's computationally infeasible to reverse the hash back to the original input or to find two different inputs that produce the same hash. This makes them essential for password storage, data integrity verification, file deduplication, digital signatures, and checksums.

How It Works

Enter your text and select a hash algorithm. The tool converts your text to bytes (using UTF-8 encoding), then processes those bytes through the selected cryptographic hash function using the Web Crypto API. The algorithm performs a series of mathematical operations (bitwise operations, modular addition, compression functions) that produce a fixed-size output regardless of input length. MD5 produces 128-bit hashes (32 hex characters), SHA-256 produces 256-bit hashes (64 hex characters). The same input always gives the same hash, but even a one-character change produces a completely different output.

Examples

SHA-256 hash of text

Input

hello world

Output

b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9

Common Use Cases

•Generating file checksums to verify data integrity after downloads or transfers
•Creating hashed passwords for development and testing (never use MD5/SHA for production password hashing — use bcrypt)
•Computing content hashes for cache invalidation and deduplication systems
•Generating deterministic identifiers from text data for database lookups
•Verifying that configuration files haven't been tampered with using SHA-256 checksums
•Creating HMAC signatures for API authentication and webhook verification