SQL Password Hash Generator for INSERT/UPDATE

Generate SQL code to store hashed passwords in your database. Input a password, choose MD5, SHA1, SHA2, and get ready-to-use INSERT or UPDATE statements instantly.

SQL Password Hash Generator

Generate MD5, SHA, and database-specific password hashes

Password

Supported Hash Types

MD5 - Message Digest Algorithm (128-bit)
SHA-1 - Secure Hash Algorithm 1 (160-bit)
SHA-256 - Secure Hash Algorithm 256-bit
SHA-512 - Secure Hash Algorithm 512-bit
MySQL OLD_PASSWORD - Legacy MySQL password format
MySQL PASSWORD() - MySQL 4.1+ password format
PostgreSQL MD5 - PostgreSQL MD5 password format

How It Works

This SQL password hash generator creates INSERT and UPDATE statements with properly hashed passwords using MD5, SHA1, or SHA2 algorithms for direct database insertion.

The generation process:

Password input: Enter the plaintext password you want to hash and store securely.
Algorithm selection: Choose MD5, SHA1, SHA256, or SHA512 based on your security requirements and database capabilities.
SQL dialect selection: Pick MySQL, PostgreSQL, SQL Server, or another database to get the correct hash function syntax.
Statement generation: The tool produces ready-to-execute INSERT or UPDATE statements with the hash function embedded.

Storing hashed passwords instead of plaintext is essential for security. Even if your database is compromised, attackers can't immediately see user passwords.

When You'd Actually Use This

Initial User Migration

Generate hash statements when migrating users from a legacy system to a new database.

Manual User Creation

Create admin or test accounts directly in the database with properly hashed passwords.

Password Reset Scripts

Build SQL scripts to reset multiple user passwords to a temporary value during security incidents.

Database Seeding

Populate development databases with test users that have known, hashed passwords.

Legacy System Integration

Match existing hash algorithms when integrating with older systems that use MD5 or SHA1.

Security Auditing

Verify password storage by generating expected hashes and comparing against stored values.

What to Know Before Using

MD5 and SHA1 are cryptographically broken

These algorithms are fast and vulnerable to rainbow table attacks. Use SHA256 or better yet, bcrypt/argon2 for production systems.

Hash functions vary by database

MySQL uses MD5(), PostgreSQL uses md5(), SQL Server uses HASHBYTES(). This tool generates the correct syntax for your database.

Salting is not included

These statements hash passwords without salts. For real security, add random salts per user and store them separately.

No key stretching

Simple hashes are fast to compute. Production systems should use PBKDF2, bcrypt, or argon2 for password-specific hashing.

Generated SQL executes immediately

Running these statements will insert or update data. Always test on a development database first.

Common Questions

Which hash algorithm should I use for passwords?

For new systems, avoid MD5/SHA1 entirely. Use bcrypt, argon2, or PBKDF2 with salts. If limited to SQL functions, SHA256 with a salt is minimum acceptable.

What's the difference between MD5, SHA1, and SHA256?

MD5 produces 32 hex characters, SHA1 produces 40, SHA256 produces 64. More importantly, SHA256 is cryptographically stronger and resistant to known attacks.

Can I reverse a password hash?

Hashes are one-way functions - you can't decrypt them. To verify passwords, hash the input and compare to stored hash. Rainbow tables can crack weak passwords.

Why not just store plaintext passwords?

If your database is breached, plaintext passwords expose all user accounts. Hashes protect users even if attackers steal the database.

How do I add password salting in SQL?

Generate a random salt per user, concatenate with password before hashing, and store both. Example: CONCAT(salt, MD5(CONCAT(salt, password))).

Can I use this for API authentication tokens?

For tokens, consider using UUID or cryptographically secure random strings instead of hashes. Hashes are designed for password verification, not token generation.

What if my database doesn't have SHA2 functions?

Older MySQL versions lack SHA2(). Use SHA1() as minimum, or compute hashes in application code before inserting into the database.

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SQL Password Hash Generator for INSERT/UPDATE