Hash Generator - MD5, SHA256, SHA512 Online Free
Generate MD5, SHA-1, SHA-256, SHA-512, CRC32 hashes and Base64 encoding for text and files. Secure cryptographic hash functions.
SHA256 Information
Description: 256-bit hash, cryptographically secure
Output length: 64 characters
Best for: Passwords, digital signatures, blockchain
Security Levels:
- MD5: ⚠️ Deprecated for security
- SHA-1: ⚠️ Weak, avoid for new projects
- SHA-256: ✅ Secure, widely recommended
- SHA-512: ✅ Highest security level
Common Use Cases:
- • File integrity verification
- • Password storage (with salt)
- • Digital signatures
- • Blockchain and cryptocurrency
- • Data deduplication
Frequently Asked Questions
What is the difference between hash algorithms?
MD5 is fast but less secure, SHA-256 and SHA-512 are more secure and widely used, while CRC32 is mainly for error checking, not security.
Are these hashes secure for passwords?
For passwords, use SHA-256 or SHA-512 with salt. MD5 and SHA-1 are not recommended for password hashing due to security vulnerabilities.
Can I hash large files?
Yes, you can upload and hash files up to a reasonable size limit. The hashing is done locally in your browser.
What is Base64 encoding used for?
Base64 encoding converts binary data to text format, commonly used for data transmission, email attachments, and web development.