🔐 Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes for text or files. Compare hashes, verify file integrity, and understand cryptographic hash functions. Perfect for developers, security professionals, and file verification.
MD5
128-bit
Insecure - Not recommended
SHA-1
160-bit
Deprecated - Avoid
SHA-256
256-bit
Secure - Recommended
SHA-512
512-bit
Very Secure - Extra strength
Drag & drop a file here or click to select
Supports any file type - calculates hash of file contents
Compare Text with Hash
Common Hash Examples
Empty string MD5
d41d8cd98f00b204e9800998ecf8427e"Hello, World!" MD5
b10a8db164e0754105b7a99be72e3fe5Hash Security Guide
- MD5:Broken - do not use for security
- SHA-1:Deprecated - avoid for security
- SHA-256:Secure - recommended
- SHA-512:Very secure - extra strength
📚 Understanding Cryptographic Hashes
🔹 What is a Hash?
A cryptographic hash function takes any input and produces a fixed-length string. Even a tiny change in input produces completely different hash (avalanche effect).
🔹 Hash Properties
- Deterministic
- One-way
- Collision-resistant
- Fixed length
❓ Frequently Asked Questions
Can I decrypt a hash back to the original text?
No, hash functions are one-way by design. You cannot "decrypt" a hash. The only way is to guess the input, hash it, and compare. This is why rainbow tables and salting are important for password storage.
What is hash collision?
A collision occurs when two different inputs produce the same hash. MD5 and SHA-1 have known collision vulnerabilities, which is why they're deprecated.
What is the best hash algorithm?
For general use, SHA-256 is recommended. For password storage, use bcrypt, scrypt, or Argon2 with salts. For maximum security, SHA-512 provides 512-bit output.