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Hash Generator

A free online tool to generate hash values from text or files

Drag and drop a file or click to select

All file formats supported

Hash Result

Enter text or select a file to automatically generate hash values.

What is a Hash?

A hash function is a one-way function that converts data of arbitrary length into data of fixed length. It always produces the same output for the same input, and it is practically impossible to reverse-engineer the original input from the output. It is used in various security fields such as file integrity verification, password storage, and digital signatures.

Supported Algorithms

  • MD5 — 128-bit hash. Fast but has known collision vulnerabilities, so it is not recommended for security purposes. Still used for file checksum purposes.
  • SHA-1 — 160-bit hash. More secure than MD5, but collision attacks are also possible, so SHA-256 or higher is recommended for security purposes.
  • SHA-256 — 256-bit hash. Part of the SHA-2 family, it is currently the most widely used secure hash algorithm. Used in blockchain, SSL certificates, etc.
  • SHA-384 — 384-bit hash. A truncated version of SHA-512 output, used when a higher level of security is required.
  • SHA-512 — 512-bit hash. Produces the longest hash value in the SHA-2 family, used when the highest level of security is required.

How to Use

  1. Select text mode or file mode.
  2. Enter text or drag and drop a file to automatically generate hash values.
  3. You can copy the desired hash value to the clipboard using the "Copy" button next to each algorithm.
  4. Use the uppercase/lowercase toggle to change the hash value output format.

Frequently Asked Questions

No. All hash calculations are processed on the client side only using the browser's Web Crypto API and JavaScript. Your entered text or files are not sent to any external server, so you can use it with confidence.

For security-critical cases (password hashing, digital signatures, etc.), always use SHA-256 or higher. MD5 is vulnerable to collision attacks and is not suitable for security purposes. For simple checksum purposes to quickly verify if files are identical, MD5 is still useful.

No. Hash functions are one-way functions, so it is impossible to recover original data from a hash value. This is precisely why hash functions are widely used in security fields such as password storage.

Yes, files are loaded into browser memory for processing. Normal files (up to a few hundred MB) can be hashed without issues. However, very large files may become slow or fail depending on browser memory limitations.
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