Hash Generator
FreeGenerate MD5, SHA-1, SHA-256, SHA-512 hashes from text or files
hashmd5sha256sha512checksum
All Developer ToolsRelated tools
How it works
1
Enter
Type or paste the text you want to hash into the input field.
2
Select
Choose one or more hash algorithms: MD5, SHA-1, SHA-256, or SHA-512.
3
Copy
Copy any generated hash value to use for checksums, integrity verification, or storage.
Frequently asked questions
Is my text sent to a server for hashing?+
No. All hash computation runs in your browser using the Web Crypto API. Your input text never leaves your device.
What is the difference between MD5, SHA-1, and SHA-256?+
MD5 produces a 128-bit hash and is fast but not collision-resistant. SHA-1 produces 160 bits and is also considered weak. SHA-256 produces 256 bits and is currently recommended for security-sensitive use cases.
Can I reverse a hash back to the original text?+
No. Hash functions are one-way by design. You cannot recover the original input from a hash. This is what makes them useful for password storage and data integrity checks.
Which algorithm should I use for file integrity checks?+
Use SHA-256. It offers strong collision resistance and is the standard for verifying file downloads, software packages, and digital signatures. Avoid MD5 and SHA-1 for security purposes.
Why do small input changes produce completely different hashes?+
This is called the avalanche effect. Good hash functions are designed so that even a one-bit change in input produces a drastically different output, making it impossible to predict the hash from similar inputs.