Hash Calculator
Generate MD5, SHA-1, SHA-256 and other cryptographic hash values for text and files
Calculate secure hash values using multiple algorithms including MD5, SHA-1, SHA-256, and more. Simply input text or upload files to generate instant hash checksums for verification and security purposes.
Multi-Hash Generator
Generator hash values for text or files using various hashing algorithms.
About Hashing
A hash function is a mathematical algorithm that transforms data of any size into a fixed-size output.
Common Use Cases:
- Password storage
- File integrity verification
- Digital signatures
- Data deduplication
- Blockchain and cryptocurrency
Hash Algorithm Comparison:
- MD5: 128-bit, fast but vulnerable to collisions
- SHA-1: 160-bit, deprecated for security applications
- SHA-256: 256-bit, secure and widely used
- SHA-384/512: Stronger variants with larger output
Security Note: MD5 and SHA-1 are considered cryptographically broken. Use SHA-256 or newer algorithms for security-sensitive applications.
Understanding Hash Algorithms
MD5 (Message Digest 5)
- 128-bit hash value (32 hexadecimal characters)
- Designed by Ronald Rivest in 1991
- Fast computation but cryptographically broken
- Vulnerable to collision attacks since 2004
- Still used for non-cryptographic purposes
⚠️ Not recommended for security-sensitive applications
SHA-1 (Secure Hash Algorithm 1)
- 160-bit hash value (40 hexadecimal characters)
- Developed by NSA and published in 1995
- Widely used but now considered weak
- Collision attack demonstrated in 2017
- Deprecated by NIST since 2011
⚠️ Deprecated for cryptographic use
SHA-256 (SHA-2 Family)
- 256-bit hash value (64 hexadecimal characters)
- Part of SHA-2 family, published in 2001
- Currently secure and widely adopted
- Used in Bitcoin and many cryptocurrencies
- FIPS 140-2 approved for federal use
✅ Recommended for current use
SHA-384 & SHA-512
- 384-bit and 512-bit hash values respectively
- Also part of the SHA-2 family
- Higher security margin than SHA-256
- Slower computation due to larger output
- Used for high-security applications
✅ Maximum security for sensitive data
Performance Comparison
| Algorithm | Output Size | Speed | Security |
|---|---|---|---|
| MD5 | 128 bits | Very Fast | Broken |
| SHA-1 | 160 bits | Fast | Weak |
| SHA-256 | 256 bits | Medium | Strong |
| SHA-512 | 512 bits | Slower | Very Strong |