Hash Generator Generate MD5, SHA1, SHA256, and SHA512 hashes instantly for secure checksums, password hashing, and data integrity verification. Quick Start

Enter the text you want to hash in the input field Select your desired hashing algorithm (MD5, SHA-1, SHA-256, or SHA-512) Click "Generate Hash" to compute the hash Copy the resulting hash or export your results

Features

Multiple Hash Algorithms: Support for MD5, SHA-1, SHA-256, and SHA-512 Instant Processing: Generate hashes in milliseconds Bulk Processing ⭐ Pro: Upload CSV files to hash multiple inputs at once (up to 2,000 rows) Export Options ⭐ Pro: Download results in CSV or JSON format History Tracking ⭐ Pro: Access your previous hash generations Algorithm Information: See detailed security information about each algorithm Copy to Clipboard: One-click copy of generated hashes

How to Use Single Hash Generation

Enter Input Text: Type or paste the text you want to hash in the input field (up to 10,000 characters) Choose Algorithm: Select from the dropdown menu:

MD5: 128-bit hash, fast but not recommended for security SHA-1: 160-bit hash, deprecated for cryptographic use SHA-256: 256-bit hash, recommended for most security applications SHA-512: 512-bit hash, maximum security for sensitive data

Generate: Click the "Generate Hash" button Copy Result: Use the copy button to copy the hash to your clipboard

Bulk Processing ⭐ Pro Feature

Navigate to the "Bulk Upload" tab Download the CSV template or create your own with these headers:

text_input: The text to hash algorithm: The algorithm to use (md5, sha1, sha256, sha512)

Upload your CSV file (max 25 rows free, 2,000 rows for Pro users) Click "Process CSV" to generate all hashes Download results in CSV or JSON format

FAQ Q: Are these hashes secure for passwords? A: Use SHA-256 or SHA-512 for password hashing. MD5 and SHA-1 are not recommended for security-critical applications as they have known vulnerabilities. For production password storage, use specialized algorithms like bcrypt or Argon2. Q: Can I hash multiple values at once? A: Yes! Pro users can use the Bulk Upload CSV feature to hash up to 2,000 inputs in a single batch. Free users can process up to 25 rows per upload. Q: What's the difference between the algorithms? A: Each algorithm produces different hash lengths and security levels:

MD5: Fast but vulnerable, use only for non-security checksums SHA-1: Better than MD5 but still deprecated for security SHA-256: Industry standard, recommended for most applications SHA-512: Highest security, best for sensitive data

Q: Can hashes be reversed? A: No, cryptographic hashes are one-way functions. They cannot be reversed to retrieve the original input. However, weak hashes like MD5 can be cracked using rainbow tables for common inputs. Q: Why are my hashes different from other tools? A: Hashes are deterministic - the same input always produces the same output. If you're seeing different results, check for differences in:

Trailing spaces or newlines in your input Character encoding (this tool uses UTF-8) The algorithm being used

Q: What are hashes used for? A: Common use cases include:

Verifying file integrity and detecting corruption Storing password representations securely Creating unique identifiers for data API authentication and digital signatures Blockchain and cryptocurrency operations

Examples Example 1: Basic Text Hash Input Text: hello world Algorithm: SHA-256 Output: b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9 Example 2: Password Hash Input Text: MySecurePassword123! Algorithm: SHA-512 Output: 128-character hexadecimal hash (512 bits) Example 3: File Checksum Verification Use this tool to verify downloaded files by comparing the computed hash with the official checksum provided by the software vendor. CSV Format for Bulk Processing ⭐ Pro Your CSV file should have the following structure: text_input,algorithm hello world,sha256 password123,sha512 test data,md5 example text,sha1 Important Notes:

First row must contain headers: text_input,algorithm Algorithm values must be: md5, sha1, sha256, or sha512 Text containing commas should be wrapped in quotes Maximum 10,000 characters per input field Free tier: 25 rows maximum Pro tier: 2,000 rows maximum

Troubleshooting Problem: Hash generation fails

Solution: Ensure your input text is within the 10,000 character limit Check that your algorithm selection is valid

Problem: CSV upload rejected

Solution: Verify your CSV has the correct headers: text_input,algorithm Ensure algorithm values are lowercase: md5, sha1, sha256, sha512 Check that your file doesn't exceed the row limit for your tier

Problem: Different hash from expected

Solution: Remove any trailing spaces or newlines from your input Ensure you're using the same algorithm Verify character encoding (this tool uses UTF-8)

Problem: Cannot copy hash to clipboard

Solution: Grant clipboard permissions to your browser Try using the manual select-and-copy method

Security Recommendations

Never use MD5 or SHA-1 for password storage - Use bcrypt, scrypt, or Argon2 instead Use SHA-256 or SHA-512 for data integrity checks - These are still secure for checksums Add salts to password hashes - Never hash passwords directly without salting Don't rely on hashing alone for security - Use proper encryption for sensitive data transmission Regularly update security practices - Cryptographic standards evolve over time

Need help? Contact our support team or visit our documentation at https://docs.bulkcreator.com Pro Features: Upgrade to Pro for unlimited daily usage, bulk processing up to 2,000 rows, history tracking, and priority support.