OnlineUnitCalc logo

Hash Generator (MD5, SHA, SHA3)

Generate MD5, SHA-1, SHA-256, SHA-512, and SHA-3 hashes from text inputs.

Input Source 0 chars | 1 line
Output Results
0 chars

About Hash Generator (MD5, SHA, SHA3)

The Hash Generator (MD5, SHA, SHA3) is a high-security local cryptographic utility. It enables you to generate md5, sha-1, sha-256, sha-512, and sha-3 hashes from text inputs. To protect your privacy, this tool does not send your data, keys, or passwords across the internet—all hashing and encryption processes are performed inside your browser.

Key Features

  • Hash Functions: Generate MD5, SHA-1, SHA-256, SHA-512, and SHA-3 checksum hashes in real-time.
  • HMAC Validation: Calculate Hash-based Message Authentication Codes with custom secret keys.
  • Symmetric Ciphers: Encrypt or decrypt texts using secure algorithms (like AES-256-GCM) with passphrases.
  • CRC Checksums: Calculate CRC-16 and CRC-32 checksum values for data verification.

How to Use

  1. Type or paste your text input into the source workspace.
  2. If using HMAC or symmetric ciphers, enter your secret key or password when prompted.
  3. The tool immediately computes the secure cryptographic sums or encrypted ciphertext.
  4. Click the copy button to capture the output securely.

Common Use Cases

  • Generating secure SHA-256 hashes to verify download file integrity.
  • Testing webhook signatures by creating custom HMAC hashes using a secret token.
  • Encrypting sensitive messages or API keys locally before saving them in shared text documents.

Related Tools

HMAC Generator Create Hash-based Message Authentication Codes with shared secret keys. CRC-16 / CRC-32 Generator Calculate Cyclic Redundancy Check checksums for input text strings. AES / TripleDES Encryption Encrypt or decrypt messages using AES, TripleDES, and Blowfish protocols.

Frequently Asked Questions

What is the Hash Generator (MD5, SHA, SHA3) on onlineunitcalc?

The Hash Generator (MD5, SHA, SHA3) is a free, fast, client-side developer tool available on onlineunitcalc. It allows you to generate md5, sha-1, sha-256, sha-512, and sha-3 hashes from text inputs. in your browser without uploading your input to our servers.

Does the Hash Generator (MD5, SHA, SHA3) send my data or password to any server?

Absolutely not. The Hash Generator (MD5, SHA, SHA3) executes purely client-side using JavaScript. Your text input, secret keys, or ciphers never leave your device.

What algorithms are supported by the cryptography tools on onlineunitcalc?

Our cryptographic suite supports industry-standard algorithms, including MD5, SHA-1, SHA-256, SHA-512, SHA-3, HMAC, CRC-16, CRC-32, as well as AES and TripleDES symmetric encryption.