Hash Generator
Generate SHA-1, SHA-256, and SHA-512 hashes from text
How to Hash Generator Online
Generate SHA-1, SHA-256, and SHA-512 cryptographic hashes from any text input.
- Type or paste your text into the input area.
- Watch the hash values update automatically as you type.
- Review the SHA-1, SHA-256, and SHA-512 hashes displayed below the input.
- Click "Copy" next to any hash to copy it to your clipboard.
About Hash Generator
Cryptographic hash functions transform arbitrary input data into a fixed-length string of hexadecimal characters. They are one-way functions — you cannot reverse a hash to recover the original input — which makes them essential for data integrity verification, password storage, digital signatures, and content addressing. This tool generates three widely used hash variants: SHA-1, SHA-256, and SHA-512.
SHA-256 (part of the SHA-2 family) is the most commonly used hash algorithm today. It produces a 64-character hex string and is used in TLS certificates, Bitcoin mining, Git commit identifiers, and countless verification workflows. SHA-512 produces a 128-character hex string and offers stronger collision resistance for applications that require it. SHA-1 produces a 40-character hex string and is included for compatibility with older systems, though it has known vulnerabilities and should not be used for security-critical applications.
This tool uses the Web Crypto API (crypto.subtle.digest) built into all modern browsers, ensuring fast and standards-compliant hash computation. All processing happens locally — your text is never transmitted to any server. The hashes update in real time with a short debounce, so you can see results instantly as you type.
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Frequently Asked Questions
What hash algorithms are supported?
This tool generates SHA-1, SHA-256, and SHA-512 hashes using the Web Crypto API built into your browser. MD5 is not supported because the Web Crypto API does not include it, and MD5 is considered insecure for cryptographic purposes.
Are the hashes computed in real time?
Yes. The hashes update automatically as you type, with a 300ms debounce to avoid unnecessary computation while you are still typing.
Which hash should I use?
SHA-256 is the most commonly used general-purpose hash. SHA-512 offers a longer hash for additional collision resistance. SHA-1 is included for compatibility with legacy systems but is no longer recommended for security-sensitive applications.
Is my data sent to a server?
No. All hashing is performed locally in your browser using the Web Crypto API. Your text never leaves your device.