Question 1

How do I generate a hash online?

Accepted Answer

Enter your text in the input field and select the hash algorithm (SHA-1, SHA-256, or SHA-512). The hash is computed instantly in your browser using the Web Crypto API. Copy the result with one click.

Question 2

What is the difference between SHA-1, SHA-256, and SHA-512?

Accepted Answer

They differ in output length and security. SHA-1 produces 160-bit hashes (considered weak for security). SHA-256 produces 256-bit hashes (standard for most applications). SHA-512 produces 512-bit hashes (highest security, slightly slower).

Question 3

Can you reverse a hash back to the original text?

Accepted Answer

No. Cryptographic hash functions are one-way — you cannot reverse a hash to get the original input. This is by design and is what makes hashing useful for password storage and data integrity verification.

Hash Generator (SHA-1, SHA-256, SHA-512)