Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from any text. Runs securely in your browser.
What is a Hash Function?
A hash function is a mathematical algorithm that takes any input and produces a fixed-length string called a hash or digest. The same input always produces the same hash, but even a single character change produces a completely different hash. This property makes hashes extremely useful for data integrity checks, password storage, and digital signatures.
SHA-256 is the most widely used hash algorithm today. It is used by Bitcoin for proof-of-work, by TLS for securing web connections, and by software publishers to verify downloads. SHA-512 offers even stronger security with a longer output.
MD5 and SHA-1 are older algorithms that are no longer considered secure for cryptographic purposes, but they are still widely used for file integrity checks and checksums where security is not the primary concern.
Frequently Asked Questions
Can I reverse a hash to get the original text?▼
No. Hash functions are one-way — it is computationally infeasible to reverse a hash. This is why they are used to store passwords securely.
What is SHA-256 used for?▼
SHA-256 is used for securing SSL/TLS connections, Bitcoin mining, file integrity verification, digital signatures and password hashing.
Is MD5 safe to use?▼
MD5 is not safe for cryptographic purposes like password storage because it is vulnerable to collision attacks. Use SHA-256 or SHA-512 for security-critical applications.
Does this tool send my data anywhere?▼
No. All hash generation happens in your browser using the Web Crypto API. Your text never leaves your device.