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Free Online Hash Generator

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Generate MD5, SHA-1, SHA-256, SHA-512 hashes instantly. All processing happens locally.

Input Text
Enter text or upload a file to hash

0 characters

Generated Hashes
Click any hash to copy
32 chars
Enter text to generate hash...
40 chars
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64 chars
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96 chars
Enter text to generate hash...
128 chars
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About Hash Functions

Hash functions are one-way cryptographic algorithms that convert input data into a fixed-size string. They are widely used for data integrity verification, password storage, and digital signatures.

Algorithm Comparison

  • MD5: 128-bit hash, fast but cryptographically broken. Use only for checksums.
  • SHA-1: 160-bit hash, deprecated for security use but common in legacy systems.
  • SHA-256: 256-bit hash, part of SHA-2 family. Recommended for most security applications.
  • SHA-512: 512-bit hash, stronger but slower. Use when maximum security is needed.

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What this tool does

Calculate text or binary-file checksums for comparison.

How to use it

Select text or file input and an algorithm. Compare the full output with a trusted checksum.

Worked example

SHA-256 of UTF-8 abc without a newline is ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad.

Limitations and checks

Changing a newline changes the hash. MD5 and SHA-1 are unsuitable for adversarial integrity checks. A plain hash is not password storage or proof of authenticity.

How your data is processed

File processing runs in your browser; this operation does not upload the selected file. Downloads create a new file and do not modify the original. Browser memory limits can prevent large files from completing.

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