How to Use the Hash Generator

Select a hash algorithm (MD5, SHA-1, SHA-256, or SHA-512), then type or paste your text. The hash is computed automatically as you type — entirely in your browser using the Web Crypto API.

What is Hashing?

A hash function takes an input of any size and produces a fixed-size string of characters. The same input always produces the same hash, but even a tiny change in the input produces a completely different hash. Hash functions are one-way — you cannot reverse a hash back to the original input.

Which Algorithm Should I Use?

MD5 — Fast but cryptographically broken. Use only for checksums, not security.
SHA-1 — Deprecated for security. Still used in some legacy systems.
SHA-256 — Recommended. Used in TLS, Bitcoin, and most modern applications.
SHA-512 — Longer hash, slightly more secure than SHA-256. Used in some password hashing schemes.

FAQ

Is my data safe?

Yes. All hashing happens in your browser using the Web Crypto API. No data is sent to any server.

Can I reverse a hash?

No. Hash functions are one-way. You cannot recover the original text from a hash.