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Generate and verify industry-standard Blowfish-based hashes with adjustable work factors for maximum security.
Higher rounds exponentially increase the time needed to crack the hash but also increases generation time. 10-12 is recommended for modern web apps.
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Bcrypt verification is safe to perform client-side as the hash contains the salt needed for comparison. No data is sent to the server.
Enter Plain Text: Type the sensitive string or password you wish to hash into the 'Text to Hash' field.
Adjust Salt Rounds: Use the slider to set the cost factor (4-31). Rounds between 10-12 are recommended for a balance of security and performance.
Generate & Copy: Click 'Generate Secure Hash' and copy the resulting string to your clipboard.
Verify Match: To test an existing hash, paste it into the 'Bcrypt Hash' field and provide the original string to see if they match.
What: Bcrypt is a password-hashing function based on the Blowfish cipher that incorporates a salt to protect against rainbow table attacks and an adaptive cost factor to resist brute-force attacks.
Why: Using Bcrypt ensures that even if your database is compromised, passwords remain computationally impossible to reverse engineer, providing a vital layer of defense-in-depth for web security.
In an era of massive data breaches, standard hashing algorithms like MD5 or SHA-256 are no longer sufficient for password storage. Because those algorithms are designed for speed, modern GPUs can crack millions of variations per second.
| Cost Factor | Security Level | Compute Time (Avg) | Recommended Use |
|---|---|---|---|
| 4 - 8 | Weak | < 10ms | Legacy systems / Testing |
| 10 - 12 | Standard | 100ms - 500ms | Modern Web Applications |
| 13 - 15 | High | 1s - 4s | Highly Sensitive Data |
| 16+ | Paranoid | 10s+ | Offline Archive Protection |
* Compute times vary based on user hardware. For web requests, 250ms is generally considered the maximum acceptable latency.
| Algorithm | Type | Security | Best Use |
|---|---|---|---|
| Bcrypt | Adaptive Hash | 9.5/10 (High) | Password Hashing |
| Argon2id | Memory-Hard Hash | 10/10 (Elite) | Next-gen Password Storage |
| SHA-256 | Fast Digest | 4/10 (Moderate) | File Integrity Only |
| MD5 | Legacy Digest | 1/10 (Critical) | Broken - Do not use for passwords |
You don't need to create a separate "salt" column in your database. Bcrypt stores the salt directly inside the resulting hash string (the prefix portion).
Unlike encryption (AES), hashing is a one-way street. You cannot "decrypt" a Bcrypt hash. You can only verify if a candidate string produces the same result.