Text Hash Calculator
Generate secure hash values for any text using multiple algorithms including MD5, SHA1, SHA256, SHA512, and more. Our online text hash calculator provides instant cryptographic hash generation for security and verification purposes.
About Hash Algorithms
Hash algorithms convert data of arbitrary length into fixed-length strings. Different algorithms provide varying levels of security and performance. All calculations are performed in your browser, and data is not sent to the server.
Shortcuts: Ctrl+Enter Calculate all hash values Esc Clear input
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Usage Tips
- All tools run in your browser, your data will not be uploaded to the server
- You can use shortcuts to improve efficiency
- Dark mode supported, click the top right to switch
Recent Updates
• Added QR code generation tool
• Optimized mobile display
• Added multilingual support
Frequently Asked Questions
What is a hash value and why would I need one?
A hash value is a fixed-size string of characters generated from input text using a mathematical algorithm. Hashes are used for data integrity verification, password storage, digital signatures, and to verify that data hasn't been altered.
Which hash algorithm should I use?
For general purposes, SHA256 is recommended as it provides a good balance of security and performance. MD5 and SHA1 are considered less secure for cryptographic purposes but may be used for non-security critical checksums.
Is this hash calculator secure?
Yes, all calculations are performed locally in your browser. Your text is never sent to our servers, ensuring complete privacy and security.
Can hash values be reversed to get the original text?
No, cryptographic hash functions are designed to be one-way functions. It's computationally infeasible to reverse a hash to obtain the original input, which is why they're used for security purposes.
Why do different hash algorithms produce different length outputs?
Each hash algorithm is designed with different internal structures and security properties, resulting in different output lengths. For example, MD5 produces 128-bit (32 character) hashes, while SHA256 produces 256-bit (64 character) hashes.