SHA-256 vs MD5: What's the Difference?
Understand SHA-256 vs MD5 for hashing, integrity checks, and security-focused use cases.
SHA-256 and MD5 are both hashing algorithms, but they differ significantly in modern security and reliability.
Quick verdict
Choose SHA-256 for modern security and integrity checks. Avoid MD5 for cryptographic use.
At a glance
| Criteria | SHA-256 | MD5 |
|---|---|---|
| Security strength | Strong for modern use | Broken for security-sensitive use |
| Output length | 256-bit | 128-bit |
| Collision resistance | Much stronger | Weak |
| Recommended today | Yes | No |
Security
- MD5 is considered broken for security-sensitive use cases.
- SHA-256 is substantially stronger and widely adopted.
Performance
- MD5 can be faster, but performance alone should not drive security choices.
Best use cases
- Use SHA-256 for modern integrity or security workflows.
- Avoid MD5 for cryptographic purposes.
Related learning pages
Related tools
Frequently asked questions
Is MD5 encryption?
No. MD5 is a hashing algorithm, not an encryption method.
Can SHA-256 be reversed?
No. SHA-256 is a one-way hash function.