Hash Calculator
Calculate MD5, SHA-1, SHA-256, SHA-512 hash values
These tools are for educational and informational purposes only. They are not investment, trading, or financial advice. Cryptocurrency involves significant risk — always do your own research.
How to use Hash Calculator
- 1Type or paste the text or file content you want to hash.
- 2Choose the algorithm (MD5, SHA-1, SHA-256, SHA-512).
- 3Copy the resulting digest to verify integrity or store a fingerprint.
What Is a Hash?
hash(message) → fixed-length digestA hash function turns any input into a fixed-length string. The same input always produces the same digest, but a tiny change completely changes the output.
Hashes verify file integrity, store passwords safely, and power blockchains and digital signatures.
Frequently asked questions
Which algorithm should I use?
Use SHA-256 or SHA-512 for security. MD5 and SHA-1 are fast but broken for security and only okay for checksums.
Can I recover the original text from a hash?
No. Hashing is one-way; you cannot reverse it. That is why it is safe for storing passwords.
Why does changing one character change everything?
Hash functions are designed to be avalanche-sensitive: a single bit change spreads to a completely different digest.
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