Util Hub.io

Hash Generator

Compute MD5, SHA-1, SHA-256, and SHA-512 hashes from any text — all at once, in your browser.

Related Tools

JSON Formatter & ValidatorFormat, beautify, and validate JSON instantly. Errors with line numbers, runs 100% in your browser.Base64 Encoder & DecoderEncode or decode Base64 instantly with full UTF-8 and emoji support. No upload, runs in your browser.UUID Generator (v4)Generate random UUID v4 identifiers in bulk. RFC 4122 compliant, client-side, no signup.URL Encoder & DecoderEncode or decode URLs with percent-encoding. Choose encodeURI or encodeURIComponent. UTF-8 safe.Regex TesterTest and debug JavaScript regex with real-time match highlighting and capture-group colors.Diff CheckerCompare two texts or code blocks side-by-side. Word-level highlighting, no signup, client-side.

Free Online Hash Generator — MD5, SHA-1, SHA-256, SHA-512

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text — all four computed at the same time, updating as you type. UtilHub's hash generator uses the browser's built-in Web Crypto API so your input never touches a server; even sensitive strings, tokens, and password-test material stay local. Use it to verify file integrity checksums, generate fingerprints for caching, compare hash outputs across algorithms, or pre-compute test vectors. Unicode text, emojis, and multi-line input are handled correctly. Unlike emn178's page or md5hashgenerator.com, you see every common digest at once instead of switching tools.

How to use Hash Generator

  • Type or paste your text into the input area.
  • MD5, SHA-1, SHA-256, and SHA-512 outputs update instantly.
  • Switch between hex and Base64 representation if needed.
  • Click "Copy" next to any hash to send it to your clipboard.
  • Clear input to wipe local state when finished.

Features

  • Multiple algorithms at once — MD5, SHA-1, SHA-256, and SHA-512 computed simultaneously from the same input. No tab-switching.
  • Real-time hashing — Output updates as you type — no "Calculate" button to press, no server round-trip.
  • 100% client-side — Web Crypto API runs locally. No text is sent to any server, logged, or stored.
  • Unicode safe — Handles any Unicode text including emojis, CJK characters, and multi-line strings with correct UTF-8 byte sequences.

Frequently Asked Questions

Which hash algorithm should I use?

It depends on your use case. SHA-256 is the current standard for security-sensitive applications like digital signatures, JWT signing, and blockchain. SHA-512 is similar but faster on 64-bit systems. SHA-1 is still used for non-security checksums (Git, for example) but is cryptographically broken. MD5 is fast and fine for non-security file integrity checks but unsafe for passwords or security purposes due to known collisions.

Is my text safe when generating hashes here?

Yes. All hashing happens in your browser via the Web Crypto API. Your input never leaves your device, is never logged, and is never transmitted. This is verifiable — disconnect from the internet after page load and the tool keeps working. Safe for passwords during local testing, API keys, and internal payloads.

Can I hash a file with this tool?

This tool focuses on text input. For file hashing, use the same algorithms via your terminal: on macOS/Linux, <code>shasum -a 256 file.zip</code> for SHA-256 or <code>md5 file.zip</code> for MD5. On Windows, <code>Get-FileHash -Algorithm SHA256 file.zip</code> in PowerShell. The hex output should match what UtilHub produces for the same byte content.