Generate SHA-512 hashes from any text. 512-bit digest via the native Web Crypto API. Everything runs in your browser — nothing is transmitted.
Use ⌘ + D to bookmark this toolhash output appears here — one hash per line
SHA-512 (Secure Hash Algorithm 512) is a cryptographic hash function from the SHA-2 family, designed by the NSA and published by NIST in 2001. It produces a fixed 512-bit (64-byte) hash value — rendered as a 128-character hexadecimal string.
SHA-512 operates on 64-bit words, making it faster than SHA-256 on 64-bit processors. It remains cryptographically secure with no known practical attacks. It's widely used in digital signatures, TLS certificates, blockchain systems, and anywhere strong data integrity is required.
| Algorithm | Output | Security | Speed (64-bit) | Use Case |
|---|---|---|---|---|
| MD5 | 128-bit | Broken | Fast | Legacy checksums only |
| SHA-1 | 160-bit | Broken | Fast | Deprecated everywhere |
| SHA-256 | 256-bit | Secure | Moderate | General purpose, Bitcoin |
| SHA-384 | 384-bit | Secure | Fast | TLS cipher suites |
| SHA-512 | 512-bit | Secure | Fastest* | Signatures, certificates |
| SHA-3 | Variable | Secure | Slower | Post-quantum readiness |
*SHA-512 is faster than SHA-256 on 64-bit CPUs because it uses 64-bit arithmetic operations natively.
SHA-512 is used with RSA, ECDSA, and EdDSA to create tamper-proof digital signatures. The 512-bit digest provides a large security margin, making it the preferred choice for signing critical documents and software packages.
TLS/SSL certificates use SHA-512 (or SHA-256) to sign certificate chains. Browsers and operating systems verify these signatures to establish trust between your device and websites.
SHA-512 verifies that files, messages, and database records haven't been tampered with. Unlike MD5, SHA-512 provides strong protection against adversarial collision attacks, making it suitable for security-critical integrity checks.
Some blockchain systems use SHA-512 in their consensus mechanisms and wallet generation. Ed25519 — used by Solana, Cardano, and others — internally uses SHA-512 for key derivation and signature computation.
Generate strong, random passwords with customizable length, character sets, and options.
Generate strong, memorable passphrases from random words. Easier to remember, just as secure.
Create easy to remember passwords from random words or your own phrases with leet speak conversion.
Generate multiple unique passwords at once. Perfect for IT admins and account provisioning.
Generate cryptographically secure API keys, tokens, and secrets in multiple formats.
Generate strong, easy-to-share WiFi passwords for your home or office network.
Create a scannable QR code for your WiFi network. Guests connect instantly.
Extract the WiFi password from a QR code image. Upload or paste — no camera needed.
Generate cryptographically random PIN codes. Perfect for device locks and access codes.
Test how strong your password is. See estimated crack time, entropy, and suggestions.
Calculate the exact entropy of any password configuration. See bits, combinations, and crack times.
Generate MD5 hashes from any text. Useful for checksums, cache keys, and legacy system compatibility.
Generate a Code 128 barcode that types username, TAB, password, ENTER into login forms when scanned.
Generate passwords optimized for TVs, game consoles, and devices with on-screen keyboards. No symbols.
Generate speakable passwords from fake syllables. Easy to say aloud, type from memory, and share verbally.
Generate fun, memorable passwords children can actually remember. Word stories: red-panda-jumps-42.
SHA-512 provides 256-bit security against quantum attacks (Grover's algorithm halves effective bit strength). This is considered sufficient for the foreseeable future. NIST has not recommended migrating away from SHA-2 for hashing purposes, even in post-quantum guidelines.
SHA-512 is actually faster than SHA-256 on 64-bit processors because it operates on 64-bit words. Use SHA-512 when you want maximum security margin or work with 64-bit systems. SHA-256 is fine for most applications and produces shorter hashes.
Raw SHA-512 is too fast for password hashing — attackers can compute billions of hashes per second. Use bcrypt, scrypt, or Argon2 instead, which are intentionally slow. SHA-512 is used internally by some password hashing schemes (like SHA-512/crypt in Linux).
SHA-2 is a set of hash functions designed by the NSA and published by NIST in 2001. It includes SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, and SHA-512/256. All remain cryptographically secure with no practical attacks.
SHA-512 produces a 512-bit (64-byte) digest. In hexadecimal, each byte becomes 2 characters, resulting in 128 hex characters. The longer output provides a larger security margin against collision and preimage attacks compared to shorter hashes.