Hash Generator | A free, easy online tool

Your text

Hashes

MD5

SHA-1

SHA-256

SHA-384

SHA-512

Encode URL HTML Entities Base64 Encode Hash Number Base

How it Works

This tool computes five common cryptographic hashes from your input text. SHA hashes use your browser's built-in crypto.subtle.digest (Web Crypto API). MD5 — which the Web Crypto API doesn't include — uses a pure-JavaScript implementation per RFC 1321.

Algorithms

MD5 — 128-bit, fast. Broken for collision-resistance; useful only for non-security checks (file checksums, cache keys).
SHA-1 — 160-bit. Also collision-broken; still seen in legacy git, TLS, and signatures.
SHA-256 — the modern default. Used by Bitcoin, TLS, JWT signing, and most secure systems.
SHA-384 — 384-bit; truncated SHA-512 used in some certificate chains.
SHA-512 — 512-bit; preferred where the longest digest is wanted.

Common Use Cases

File integrity: Verify a download matches a published checksum.
Cache keys: Generate stable, fixed-length keys from arbitrary input.
API signatures: Compute HMAC-style digests for request signing.
Password storage research: Inspect hash output formats (use a real KDF like Argon2/bcrypt for production).
Deduplication: Group identical content by digest.

Privacy and Security

All hashing happens in your browser. The input text is never sent over the network or stored. Hashing is one-way — it can't be reversed — but for sensitive inputs prefer not to compute a hash on a device or in a window you don't trust.

Encoding Tools

URL Format Encoder - Encode any text into URL friendly characters
HTML Entity Encoder - Convert special characters to HTML entities for safe display in web pages
Base64 Encoder - Encode text to Base64 format. Perfect for URLs, emails, and APIs.
Number Base Converter - Convert numbers between binary, octal, decimal, and hexadecimal — typing in any field updates the others live.