Free Online Hash Generator — SHA-1, SHA-256, SHA-384, SHA-512
Cryptographic hash functions convert data of any size into a fixed-size string of characters.
Our free online hash generator supports SHA-1, SHA-256, SHA-384, and SHA-512 — powered by the
Web Crypto API for accurate, standards-compliant results. All hashing happens locally in your browser
for complete security.
Key Features
- 4 SHA Algorithms — Generate SHA-1 (40 chars), SHA-256 (64 chars), SHA-384 (96 chars), and SHA-512 (128 chars) hashes.
- Multi-Algorithm Output — Select multiple algorithms at once and see all hashes side by side. No need to re-run for each one.
- Web Crypto API — Uses the browser's native cryptographic engine for fast, accurate, standards-compliant hashing.
- One-Click Copy — Copy any individual hash result to your clipboard instantly.
- Client-Side Processing — Your text never leaves your device. No server requests, no data stored.
SimplyUtils vs Other Hash Generators: Feature Comparison
See how SimplyUtils Hash Generator compares to popular alternatives like OnlineMD5.com, CyberChef, and RapidTables:
Feature
SimplyUtils
OnlineMD5.com
CyberChef
RapidTables
SHA-256 / SHA-512
✓
✓
✓
✓
SHA-384
✓
✗
✓
✗
Multiple Hashes at Once
✓
✗
✗
✗
Client-Side (Private)
✓
✗
✓
✗
MD5 Support
✗
✓
✓
✓
File Hashing
✗
✓
✓
✗
Dark Mode
✓
✗
✓
✗
No Account Required
✓
✓
✓
Supported Hash Algorithms
- SHA-1 — 160-bit (40-character) hash. Deprecated for security use but still found in Git commits and legacy systems.
- SHA-256 — 256-bit (64-character) hash. The most widely used secure algorithm today. Part of the SHA-2 family. Used in SSL certificates, Bitcoin, and data integrity checks.
- SHA-384 — 384-bit (96-character) hash. A truncated variant of SHA-512 offering a balance between speed and hash length.
- SHA-512 — 512-bit (128-character) hash. Highest security level in the SHA-2 family. Preferred when maximum collision resistance is needed.
What is a Hash Function?
A hash function is a one-way mathematical algorithm that converts input data into a fixed-length
output called a hash, digest, or checksum. Key properties include:
- Deterministic — Same input always produces the same output.
- One-Way — Cannot reverse the hash to recover the original data.
- Collision Resistant — Extremely difficult to find two different inputs with the same hash.
- Avalanche Effect — A tiny change in input creates a completely different hash.
Common Use Cases
- File Integrity — Verify that downloads weren't corrupted or tampered with by comparing checksums.
- Password Storage — Store password hashes instead of plain text (use bcrypt/Argon2 for production).
- Digital Signatures — Sign documents and verify authenticity using hash-based signatures.
- Blockchain — Core technology behind Bitcoin and other cryptocurrencies.
- Data Deduplication — Identify identical files or content by comparing hash values.
- Caching — Generate cache keys from content to detect changes efficiently.
Security Recommendations
- For Passwords — Use bcrypt, scrypt, or Argon2 instead of plain SHA hashes.
- For Security — Use SHA-256 or SHA-512. Avoid MD5 and SHA-1 for anything security-critical.
- For Checksums — SHA-256 is the modern standard; MD5 is acceptable only for non-security file verification.
- Add Salt — When hashing passwords, always use unique random salts to prevent rainbow table attacks.
Enter your text above, select one or more algorithms, and generate all hashes at once.
Everything runs in your browser using the Web Crypto API — your data never leaves your device.