Hash Generator
Generate SHA-1, SHA-256 or SHA-512 hashes of any text instantly in your browser.
About this tool
A hash is a fixed-length fingerprint of data: the same input always produces the same hash, and even a one-character change produces a completely different one. Developers use hashes to verify file integrity, compare values and build checksums. This tool generates SHA-1, SHA-256 and SHA-512 hashes using your browser’s built-in Web Crypto API — fast, accurate and fully offline.
How to use
- 1 Type or paste the text you want to hash.
- 2 Choose the algorithm: SHA-1, SHA-256 or SHA-512.
- 3 Click Generate and copy the resulting hash.
Why use this tool
- Uses the browser’s native Web Crypto API — accurate and fast.
- Three standard algorithms in one tool.
- Your input never leaves your device.
Frequently asked questions
Which algorithm should I use?
SHA-256 is the modern default for most purposes. SHA-1 is considered weak for security use and should only be used for legacy compatibility.
Can a hash be reversed to get the original text?
No — hashing is one-way. The only attack is guessing inputs and comparing hashes, which is why long, random inputs are effectively irreversible.
Why is MD5 not included?
MD5 is cryptographically broken and browsers’ Web Crypto API deliberately does not implement it. SHA-256 is the safe replacement.
Related tools
By the SkillNexy Team · Last updated: 2026-07-12 · 100% free · Runs locally in your browser — nothing is uploaded.