Gerador de Hash — Calculadora Online Grátis
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from any text input
The Hash Generator computes MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes from any text input directly in your browser — no data leaves your device. Developers use it to verify file integrity, generate checksums for API signatures, test hash functions during development, and compare hashes without running code locally.
Frequently Asked Questions
Sobre Esta Calculadora
A cryptographic hash function transforms any input into a fixed-length fingerprint. The same input always produces the same hash; even a one-character change produces a completely different output. This deterministic but irreversible property makes hashes invaluable for verifying data integrity without exposing the original content.
MD5 and SHA-1 are legacy algorithms, still used for non-security checksums and file verification but no longer considered safe for cryptographic authentication. SHA-256 is the current standard for digital signatures, certificate authorities, and API request signing. SHA-512 offers higher security margins for long-lived credentials and blockchain applications.
This generator runs entirely client-side using the Web Crypto API, so sensitive strings like passwords or private keys never transit a network. Use it to verify downloads match their published checksums, prototype HMAC signing logic, or quickly compare whether two files have identical content.
O Gerador de Hash calcula assinaturas criptográficas instantaneamente, sem enviar seus dados para servidores externos.
Exemplo Resolvido
Generating a SHA-256 hash for API request signing
Entradas:
- Input string: "user_id=1234&amount=99.99×tamp=1717660800"
Passo a Passo:
- Apply SHA-256 algorithm to the UTF-8 encoded input string
- SHA-256 processes the input in 512-bit blocks using a Merkle–Damgård construction
- Output is always 256 bits regardless of input length
- Hex-encoded result: a4c7b2e91f... (64 hex characters)