Text hash generator
Calculate SHA-256, SHA-384, SHA-512, SHA-1, MD5 or CRC32 over UTF-8 text.
Open toolBack
Security & hashes
File checksum calculator
Calculate cryptographic hashes and CRC32 for a local file and compare a known checksum.
Free to useProcessed on your device
Open tool…
About this tool
Calculate cryptographic hashes and CRC32 for a local file and compare a known checksum.
How to use
- Enter the data and required algorithm settings.
- Run the calculation locally in your browser.
- Copy or download the result. Preserve required keys and parameters for later verification.
Everything runs locally in this browser. Web Crypto requires HTTPS. Keep keys and passwords private and save your own recovery copies; this website cannot recover them. A matching hash identifies identical bytes but does not prove that a file is trustworthy. MD5 and CRC32 are legacy integrity checks.
Comment
Related tools
HMAC generator
Create a keyed HMAC over UTF-8 text using SHA-256, SHA-384 or SHA-512.
Open toolPBKDF2 key derivation
Derive a key from a password using PBKDF2-HMAC-SHA-256 with an explicit salt and iteration count.
Open toolEncrypt text with AES-GCM
Encrypt text with authenticated AES-256-GCM and a password-derived key.
Open tool