Hash Generator - MD5, SHA1, SHA256, SHA512 Hash Generator Free
Generate cryptographic hashes for text input. Support for MD5, SHA-1, SHA-256, SHA-512 hash algorithms. Free online hash generator tool.
Quick Examples
Hash Algorithm Information
Security Levels
- 🔴 MD5: Broken, avoid for security
- 🟡 SHA-1: Deprecated, legacy use only
- 🟢 SHA-256: Secure, recommended
- 🟢 SHA-512: Very secure, larger output
Common Use Cases
- Password Storage: Use SHA-256 or better with salt
- File Integrity: SHA-256 for checksums
- Digital Signatures: SHA-256 or SHA-512
- Blockchain: SHA-256 (Bitcoin) or others
Multiple Algorithms
Support for MD5, SHA-1, SHA-256, and SHA-512.
Instant Results
Generate hashes instantly with browser crypto API.
Client-Side
All processing happens in your browser for privacy.
Easy Copy
One-click copy for all generated hash values.
Frequently Asked Questions
A cryptographic hash function takes input data of any size and produces a fixed-size string of characters. The same input always produces the same hash, but it's computationally infeasible to reverse the process.
For security applications, use SHA-256 or SHA-512. Avoid MD5 and SHA-1 for security purposes as they have known vulnerabilities. For non-security uses like checksums, any algorithm works.
No, cryptographic hashes are one-way functions. You cannot reverse them to get the original input. However, common inputs can sometimes be found using rainbow tables or brute force.
Different algorithms produce different output sizes: MD5 (128 bits/32 hex chars), SHA-1 (160 bits/40 hex chars), SHA-256 (256 bits/64 hex chars), SHA-512 (512 bits/128 hex chars).
Plain hashes are not recommended for password storage. Use proper password hashing functions like bcrypt, scrypt, or Argon2 with salt and multiple iterations for password security.