Free online password entropy calculator — calculate password entropy in bits instantly in your browser. No data is stored. Computes standard and Shannon entropy, character pool analysis, and security level assessment.
Free online password entropy calculator — calculate password entropy in bits instantly in your browser. No data is stored. Computes standard and Shannon entropy, character pool analysis, and security level assessment.
Runs entirely in your browser. No data is sent to our servers.
Measure the entropy of a password to assess its strength
MD5 Hash
Free online MD5 hash generator — compute MD5 digests instantly in your browser. No data is stored. Produces a 32-character hex hash for checksums and non-security fingerprinting (not suitable for cryptographic use).
SHA-1 Hash
Free online SHA-1 hash generator — compute SHA-1 digests instantly in your browser. No data is stored. Produces a 40-character hex hash for checksums and non-security fingerprinting (deprecated for cryptographic use).
SHA-256 Hash
Free online SHA-256 hash generator — compute SHA-256 digests instantly in your browser. No data is stored. Produces a 64-character hex hash using the Web Crypto API for data integrity and cryptographic verification.
SHA-384 Hash
Free online SHA-384 hash generator — compute SHA-384 digests instantly in your browser. No data is stored. Produces a 96-character hex hash using the Web Crypto API for cryptographic applications requiring longer digests.