Cryptography & Security

Hash generators, encryption tools, UUID generators, and cryptographic utilities for developers and security professionals.

8 calculators available

Generate MD5 hashes from text or files instantly. Free online MD5 checksum calculator with copy-to-c

Generate SHA-256 hashes from text or files online. Secure 256-bit cryptographic hash calculator usin

Generate SHA-512 hashes from text or files online. 512-bit cryptographic hash calculator with file s

Generate SHA-1 hashes from text or files. 160-bit hash calculator with deprecation warning. Useful f

Generate HMAC (Hash-based Message Authentication Code) with SHA-256, SHA-512, or SHA-1. Verify messa

Encrypt and decrypt text with AES-256-GCM encryption using a password. Client-side encryption with P

Generate random v4 UUIDs instantly. Bulk generate up to 100 UUIDs, validate UUID format, and copy wi

Generate Bitcoin key pairs and addresses using pure JavaScript elliptic curve cryptography. Educatio