Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text.
What is a Hash Generator?
A hash generator applies a cryptographic hash function to an input string and produces a fixed-length output called a hash or digest. Hash functions are one-way — you cannot reverse a hash to recover the original input. Common algorithms include MD5 (128-bit), SHA-1 (160-bit), SHA-256 (256-bit), and SHA-512 (512-bit).
How to Use This Tool
- Enter or paste your text into the input field.
- Select the hash algorithm (MD5, SHA-1, SHA-256, or SHA-512).
- The hash is generated instantly as you type.
- Copy the hash output with one click.
Common Use Cases
Hash functions are used to verify file integrity (checksums), store passwords securely in databases, generate unique identifiers, sign API requests, and verify data has not been tampered with in transit.
Which Algorithm Should I Use?
MD5 and SHA-1 are considered cryptographically broken and should not be used for security-sensitive purposes. SHA-256 is the current standard for most security applications. SHA-512 provides extra margin for highly sensitive use cases.
Frequently Asked Questions
Can I reverse a hash to get the original text?
No. Hash functions are designed to be one-way. However, common inputs like passwords can be found via rainbow table lookups — always use salted hashes for passwords.
Is MD5 still safe to use?
MD5 is not safe for security purposes like password hashing or digital signatures. It is still used for non-security tasks like file checksums.
