Hash Generator

What is a Hash?

A cryptographic hash function converts input data of any size into a fixed-length string of hexadecimal characters. The same input always produces the same hash, but even a tiny change produces a completely different output. This tool generates SHA-1, SHA-256, and SHA-512 hashes using your browser's built-in Web Crypto API.

Common Use Cases

• File Integrity Verification — Compare hash values to verify that files haven't been corrupted or tampered with during download or transfer. Match the computed hash against the publisher's expected value.
• Generating Cache Keys — Create deterministic cache keys from content or request parameters. Hash-based keys ensure unique identifiers without exposing the underlying data.
• Data Deduplication — Identify duplicate content by comparing hashes instead of comparing entire files. Two inputs with the same hash are virtually guaranteed to be identical.