Hash Generator Online
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files instantly. Free, 100% client-side — your data never leaves your browser.
Frequently Asked Questions about Hash Generation
How do I generate a hash from text online?
Simply type or paste your text into the input field. The tool instantly generates MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes in real time — no buttons to click.
Can I generate a hash from a file?
Yes, switch to the File tab and drag & drop or select a file. The tool reads your file entirely in the browser and computes all hash values without uploading anything.
What is a hash function used for?
Hash functions are used to verify data integrity, store passwords securely, generate checksums for file verification, and create digital signatures. They produce a fixed-length output from any input.
Is this hash generator secure?
Yes, all hashing is performed 100% client-side using the Web Crypto API and CryptoJS. Your data never leaves your browser and is not sent to any server.
What is the difference between MD5, SHA-1, and SHA-256?
MD5 produces a 128-bit hash and is fast but considered cryptographically broken. SHA-1 produces a 160-bit hash and is also deprecated for security use. SHA-256 produces a 256-bit hash and is currently recommended for security-critical applications.
Can I use this tool to verify file checksums?
Yes, drop your file into the File tab and compare the generated hash against the expected checksum. This is useful for verifying downloads and ensuring file integrity.
Is there a file size limit?
There is no artificial limit. The tool processes files entirely in your browser, so very large files may take a moment depending on your device's performance.