Hash Generator — SHA-256, SHA-512 Online Free
Enter text and instantly generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes. Instantly. No sign-up required.
How to md5 hash generator
- 1Type or paste your text into the input field
- 2All hash values (SHA-1, SHA-256, SHA-384, SHA-512) are generated automatically
- 3Click 'Copy' next to any hash value to copy it to your clipboard
- 4Use the hashes for checksums, data integrity verification, or password hashing workflows
About This Tool
A hash generator computes a fixed-length fingerprint from any input text using cryptographic hash functions. These one-way functions are used extensively in software development for data integrity checks, password storage, digital signatures, and content addressing.
This free hash generator uses the Web Crypto API (SubtleCrypto) built into every modern browser to compute SHA-1, SHA-256, SHA-384, and SHA-512 hashes. The Web Crypto API provides hardware-accelerated, standards-compliant implementations. Note that MD5 is not available through the Web Crypto API because it is considered cryptographically broken — the SHA family shown here provides far stronger security.
All hashing happens locally in your browser. Your text is never sent to a server, making this tool safe for hashing sensitive values like passwords or tokens. There are no usage limits and no account required.
Frequently Asked Questions
MD5 is not available in the Web Crypto API because it is considered cryptographically broken — collision attacks are practical and well-documented. SHA-256 and SHA-512 are the recommended alternatives for any security-sensitive use case.
SHA-256 produces a 256-bit (32-byte) hash and SHA-512 produces a 512-bit (64-byte) hash. SHA-512 provides a larger output and higher collision resistance, but SHA-256 is sufficient for most applications and is the most widely used variant.
Plain SHA hashes are not recommended for password storage because they are fast to compute, making brute-force attacks feasible. For passwords, use a dedicated algorithm like bcrypt, scrypt, or Argon2 that includes salting and key stretching.
SHA-1 was widely used for digital signatures and certificate validation, but it is now deprecated for security purposes due to demonstrated collision attacks. It is still used in some legacy systems and for non-security purposes like Git commit hashes.
No. All hashing happens locally in your browser using the Web Crypto API. Your text is never sent to any server and is not stored or logged.