Hash Generator
Free online Hash Generator.
Calculator
How to Use
- Enter the required values
- Click Calculate to see the result
- Review the detailed output
Formula
Hash = f(input) -> fixed-size output. MD5: 128-bit. SHA-1: 160-bit. SHA-256: 256-bit. Deterministic, one-way, avalanche effect: small input change = completely different output.
Example Calculations
SHA-256
Input: Text: hello
Result: SHA-256: 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
MD5
Input: Text: password123
Result: MD5: 482c811da5d5b4bc6d497ffa98491e38
Compare Hashes
Input: hello vs hello1
Result: Completely different outputs (avalanche effect)
About This Calculator
Free online hash generator. Calculate instantly in your browser with our easy-to-use tool. No sign-up required.
Our hash generator is free, easy to use, and provides instant results. All calculations are performed in your browser for privacy and speed.
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Frequently Asked Questions
What is a hash function?
Takes any-size input, produces fixed-size output. Deterministic, fast, one-way. Similar inputs give very different outputs.
MD5 vs SHA-1 vs SHA-256?
MD5: 128-bit, insecure. SHA-1: 160-bit, deprecated. SHA-256: 256-bit, currently secure.
Can two inputs give same hash?
Theoretically (collision), but extremely unlikely with good functions. SHA-256: ~1 in 2^128.
Hashes for passwords?
Store hashes not passwords. Salt (add random data) prevents rainbow tables. Use bcrypt or Argon2.
What is a checksum?
Hash verifying data integrity. Compare file hash to published checksum to detect corruption.