Hash Generator — Free Online Tool
Generate MD5, SHA-1, SHA-256, SHA-512 hashes
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from any text. Free, instant, 100% in your browser.
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Free online hash generator — MD5, SHA-1, SHA-256, SHA-384, SHA-512
Toololis Hash Generator computes cryptographic hashes entirely in your browser. Paste any text and instantly see all 5 common hashes. SHA family uses the browser\'s native crypto.subtle API for maximum speed and accuracy.
Hash algorithm comparison
- MD5 (128-bit, 32 hex chars) — Broken for security. Fine for file checksums and non-cryptographic uses.
- SHA-1 (160-bit, 40 hex chars) — Deprecated. Still seen in legacy systems. Collisions demonstrated in 2017.
- SHA-256 (256-bit, 64 hex chars) — Current default. Used in HTTPS, Bitcoin, Git (migration).
- SHA-384 (384-bit, 96 hex chars) — A truncated SHA-512, used where 384 bits of output are specified.
- SHA-512 (512-bit, 128 hex chars) — Long-term margin. Recommended for new systems expecting 30+ year lifespans.
How to use this tool
- 1
Paste your text
Type or paste any text — passwords, file contents, API payloads, anything. Hashes update live as you type.
- 2
Read the hashes
All 5 hashes (MD5, SHA-1, SHA-256, SHA-384, SHA-512) are computed simultaneously and displayed in hex.
- 3
Copy the one you need
Click the Copy button next to any hash to send it to your clipboard. All hashing happens locally.
Common use cases
- File integrity — Verify downloads match publisher-stated hash
- Git commits — Git uses SHA-1 (migrating to SHA-256) to identify every commit
- Password storage — Never store plain SHA-256; use bcrypt, argon2, or scrypt which include salting and cost factor
- API signing — Webhook bodies often hashed with HMAC-SHA256 for authenticity
- Blockchain — SHA-256 is the backbone of Bitcoin proof-of-work
- Cache keys — Hashing content to generate deterministic cache keys
Do NOT use hash for password storage
A plain SHA-256 of a password is insecure. GPUs can compute billions of SHA-256s per second, making dictionary attacks trivial. Use a password hashing function designed for slowness: bcrypt, argon2id, or scrypt. These are not regular hashes — they include salt and a tunable work factor.
Frequently Asked Questions
Which hash algorithm should I use?
Is MD5 safe to use?
How are hashes computed here?
crypto.subtle.digest() API — the same implementation browsers use for TLS. MD5 uses the js-md5 library (pure JS). All computation is in your browser.Can a hash be reversed?
Why do I get different hashes for "hello" and "hello "?
What's the difference between SHA-1 and SHA-256?
Is my input logged?
Key Takeaways
- Hash Generator is a free, browser-based developer tool — generate md5, sha-1, sha-256, sha-512 hashes.
- No signup, no downloads, no file uploads — your data stays on your device.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use Hash Generator
- Open the tool: Launch Hash Generator on Toololis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
Hash Generator — Quick Facts
- Price
- Free — no limits, no watermarks, no paywalls
- Privacy
- 100% browser-based — no data is sent to any server
- Platform
- Any modern browser on desktop, tablet, or mobile
- Category
- Developer Tools on Toololis
- Offline
- Works offline after first visit (Progressive Web App)
| Feature | Details |
|---|---|
| Tool | Hash Generator |
| Category | Developer |
| Signup Required | No |
| File Upload | None — processed in browser |
| Mobile Support | Fully responsive |
| Cost | Free forever |
Why Use Hash Generator?
You should try Hash Generator for a quick, private way to generate md5, sha-1, sha-256, sha-512 hashes. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.