Question 1

What hash algorithms does this tool support?

Accepted Answer

This tool calculates MD5, SHA-1, SHA-256, and SHA-512 simultaneously. All four hashes are generated from a single input — text or file.

Question 2

Is my data sent to a server?

Accepted Answer

No. All hashing is done in your browser using the Web Crypto API. Your text and files never leave your device. There are zero network requests for the hashing process.

Question 3

Why doesn't Web Crypto API support MD5?

Accepted Answer

Web Crypto API doesn't include MD5 because it's considered cryptographically broken. This tool implements MD5 using a pure JavaScript implementation. For security purposes, always prefer SHA-256 or SHA-512.

Question 4

Can I hash files?

Accepted Answer

Yes! Click the file upload tab to select any file. The tool reads the file and computes all four hashes. Large files (hundreds of MB) are processed efficiently using ArrayBuffer.

Question 5

What is the difference between SHA-256 and SHA-512?

Accepted Answer

SHA-256 produces a 256-bit (64 hex char) hash, while SHA-512 produces a 512-bit (128 hex char) hash. SHA-512 is stronger but produces longer output. Both are considered secure for most purposes.

Question 6

Can I compare two hashes?

Accepted Answer

Yes, paste a hash in the comparison field and the tool will highlight whether it matches any of the calculated hashes. Useful for verifying file integrity.

Question 7

What is a hash used for?

Accepted Answer

Hashes are used for data integrity verification, password storage (with salt), digital signatures, checksums for file downloads, and creating unique identifiers. Each unique input produces a unique fixed-length hash.

Question 8

Why are my MD5 results different from other tools?

Accepted Answer

Make sure the encoding matches. This tool uses UTF-8 encoding by default. Some tools may use different encodings or include/exclude trailing newlines. For files, the results should always match.

🔐 Hash Calculator

Results

🔐 Hash Calculator

Results

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