Cryptography
Hash Calculator
Calculate SHA hashes from text or uploaded files, compare algorithms, and inspect brute-force resistance metrics for text input.
Input Text
Digest
Hash Results
Hashes are one-way digests. They are useful for checksums, fingerprinting, comparison, and integrity checks, but they are not encrypted values that can be decrypted later.
Guide
How to use the Hash Calculator
Use this tool to generate one-way hash digests from text or files and compare output across supported SHA algorithms.
Hash text input
Type or paste text into the input area. The calculator generates the selected hash digest and updates the text-resistance estimator.
Hash uploaded files
Switch to file mode and choose a document or binary file. The digest is calculated from the file bytes in your browser.
Choose an algorithm
Generate SHA-256 for common integrity checks, or select all algorithms when you need to compare digest formats.
Understand resistance metrics
The estimator describes brute-force resistance for text input. It does not account for dictionary attacks, leaked passwords, or natural language patterns.