SHA256 Hash
Generate 256-bit SHA256 hash from text
About SHA256 Hash
SHA-256 (Secure Hash Algorithm 256-bit) is part of the SHA-2 family and produces a 256-bit (64 hexadecimal characters) hash value. It's currently considered secure and widely used.
Output length: 64 characters (256 bits)
Use cases: Digital signatures, SSL certificates, blockchain, password hashing (with salt)
Security note: Currently secure and recommended for cryptographic applications
Hash Properties
Deterministic: Same input always produces same output
Fixed Length: Output size is always constant
One-way: Cannot reverse hash to get original input
Avalanche Effect: Small input change = big hash change
Fast Computation: Quick to calculate
Collision Resistant: Hard to find two inputs with same hash
Security Notice
- • Hashes are not encryption - they cannot be reversed
- • For password storage, use proper password hashing functions (bcrypt, scrypt, Argon2)
- • Always use salt when hashing passwords or sensitive data
- • MD5 and SHA-1 are not recommended for security-critical applications
- • All processing is done locally - no data is sent to our servers