Is MD5 still safe for passwords?

No. MD5 is fast and collision-prone—unsuitable for password storage. Use it only where a spec or legacy system explicitly requires MD5, such as certain ETag or cache-key schemes.

How is the hash encoded?

Output is lowercase hexadecimal—32 characters for a 128-bit digest. Some systems expect uppercase; convert consistently when comparing.

Does whitespace affect the hash?

Yes. Leading, trailing, and internal newline characters are hashed as-is. Normalize input the same way your upstream system does before expecting a match.

Briefly Digest

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Turn any string into an MD5 digest instantly. Updates as you type — runs in your browser on this device.

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MD5 digest (32 hex chars)

MD5 fingerprints for legacy and cache keys

Modern apps rarely choose MD5 for security, but it persists in CDN cache keys, deduplication tables, and older enterprise APIs. A live digest helps confirm your client computes the same fingerprint as a COBOL-era billing endpoint.

Unicode and encoding

The hash operates on the UTF-8 bytes of your input string. If a remote system hashes Latin-1 or UTF-16 instead, digests will diverge even when the visible characters look identical.

When to prefer SHA-256

New designs should use SHA-256 or stronger via a dedicated hash tool. Keep MD5 scoped to interoperability, not integrity guarantees against motivated attackers.

FAQ

Is MD5 still safe for passwords?: No. MD5 is fast and collision-prone—unsuitable for password storage. Use it only where a spec or legacy system explicitly requires MD5, such as certain ETag or cache-key schemes.
How is the hash encoded?: Output is lowercase hexadecimal—32 characters for a 128-bit digest. Some systems expect uppercase; convert consistently when comparing.
Does whitespace affect the hash?: Yes. Leading, trailing, and internal newline characters are hashed as-is. Normalize input the same way your upstream system does before expecting a match.

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