SHA256 Hash Generator
Generate SHA-256 hashes with optional HMAC support. Configure input and output encodings for maximum flexibility.
How to Use
- 1
Enter your text
Type or paste the text you want to hash into the input field.
- 2
Select input encoding
Choose how the input should be interpreted (UTF-8 by default).
- 3
Configure output format
Select lowercase hex, uppercase hex, or Base64 output.
- 4
Optional: Enable HMAC
Toggle HMAC and enter a secret key for keyed hashing.
- 5
Generate and copy
Click Hash or enable Auto Update, then copy the result as needed.
SHA-256 (Secure Hash Algorithm 256-bit) is a cryptographic hash function that produces a 256-bit (32-byte) hash value. It is part of the SHA-2 family and is widely used in security applications, blockchain technology, and data integrity verification.
- •Bitcoin and other cryptocurrency protocols
- •SSL/TLS certificates and HTTPS
- •File integrity verification and checksums
- •Password hashing (with proper salting and stretching)
- •Digital signatures and certificate chains
- •Git commit hashes and content addressing
Tip: For security-sensitive use cases, always combine SHA-256 with salting and appropriate key stretching (e.g., PBKDF2, bcrypt, scrypt, Argon2).