Skip to content
Kordu Tools Kordu Tools

MD5 Decrypt — Hash Lookup

Reverse-lookup MD5 hashes via rainbow table databases. Not true decryption — MD5 is one-way. Checks multiple sources for the best match rate.

Last updated 02 Apr 2026

Paste a 32-character MD5 hash and look it up against rainbow table databases to find the original plaintext. Works for common passwords and short strings — salted hashes cannot be reversed. This is hash lookup, not decryption: MD5 is mathematically irreversible.

Looking for MD5 Hash Generator?

MD5 is a 128-bit (32 hex character) hash, widely used for checksums and non-security applications. It is cryptographically broken and should not be used for password storage. Lookup uses rainbow table databases — salted hashes cannot be reversed.
Loading rating…

How to use

  1. 1

    Select Lookup mode

    Click the 'Lookup' tab at the top of the widget — it is the default for this page.

  2. 2

    Paste your MD5 hash

    Paste the 32-character hexadecimal MD5 hash into the input field. Hash type is auto-detected from the length.

  3. 3

    Wait for the database query

    The tool queries rainbow table databases and displays the result within a few seconds.

  4. 4

    Review the result

    If found, the original plaintext appears in the output panel. If not found, the hash may be salted, the string may be uncommon, or it may be too long.

  5. 5

    Try the MD5 Generator

    If you need to verify a known string, switch to the Generator tab and hash the string to compare it with your target hash.

Frequently asked questions

Can every MD5 hash be decrypted?
No. MD5 is a one-way function — there is no mathematical way to reverse it. Lookup tools check databases of known hash→plaintext pairs (rainbow tables). Only strings already in the database can be 'reversed' this way. Salted hashes, long random strings, and uncommon inputs will not be found.
What is a rainbow table?
A rainbow table is a precomputed database mapping hash values to their original plaintext. For MD5, these databases can be hundreds of gigabytes and cover billions of common passwords, dictionary words, and short strings. Hash lookup tools query these databases to find matches.
Is this safe to use? Are inputs sent to a server?
The hash value is sent to external rainbow table databases (hashes.com and md5decrypt.net) for lookup. Only the hash is transmitted — not your IP or any other identifying information. If you are looking up a hash of a sensitive password, be aware that the hash itself may be identifiable.
Why does salting prevent lookup?
When a password is salted, a random string is mixed into the password before hashing. For example, MD5('password' + 'xR7qZ') produces a completely different hash than MD5('password'). Rainbow tables do not index salted hashes, so lookup fails for properly salted inputs.
What is the difference between MD5 decrypt and MD5 crack?
'Decrypt' implies a reversible process. MD5 is not decryptable — it is a one-way hash function. 'Cracking' means finding any input that produces the same hash, either via brute force or rainbow table lookup. This tool does the latter: it searches a database for a known match.
What hash length is MD5?
MD5 hashes are always 32 hexadecimal characters (128 bits). If your hash is a different length, it may be SHA-1 (40 chars), SHA-256 (64 chars), or SHA-512 (128 chars).
Why is MD5 not suitable for password storage?
MD5 is fast — modern GPUs can compute billions of MD5 hashes per second. This makes brute-force attacks trivial against unsalted MD5 passwords. Always use a purpose-built password hashing function like bcrypt, Argon2, or scrypt instead.
Can I look up SHA-256 hashes with this tool?
SHA-256 lookup is available on the SHA-256 Decrypt page. SHA-256 lookup has a much lower match rate than MD5 because the output space is vastly larger (2²⁵⁶) and fewer precomputed tables exist.
What should I do if my hash is not found?
The hash likely corresponds to a salted string, a long/random value, or a string not yet indexed. Consider using the MD5 Hash Generator to verify your hash by computing MD5 of the expected plaintext and comparing the result.

Look up MD5 hashes against large rainbow table databases to find their

original plaintext — if the input is in the database.

**Important:** MD5 is a one-way function. There is no mathematical way to

reverse an MD5 hash. "MD5 decrypt" is a common search term, but what lookup

tools actually do is query precomputed hash→plaintext databases (rainbow

tables) for a match. If the original string has never been indexed, the

lookup returns nothing.

**When reverse lookup succeeds:**

- Common passwords and dictionary words

- Short strings (typically under 8 characters)

- Strings that have been previously indexed in the database

**When it fails:**

- Salted hashes (a random salt is appended before hashing)

- Long or random strings not in any database

- bcrypt, Argon2, or scrypt hashes

**This tool queries multiple rainbow table databases** (hashes.com and

md5decrypt.net) to maximize match rate. Hash type is auto-detected from

the input length — 32-character hex strings are treated as MD5.

Your hash is sent to the lookup APIs. Only the hash value is transmitted —

no IP address or additional identifying data is included in the query.

Related tools

MD5 Hash Generator

Generate MD5 hashes from text in real time. Instant output, uppercase toggle, 100% browser-based. Not for passwords — use bcrypt instead.

SHA-256 Decrypt — Hash Lookup

Look up SHA-256 hashes against rainbow table databases. Not true decryption — SHA-256 is one-way. Works only for common, previously indexed strings.

SHA-256 Hash Generator

Generate SHA-256 hashes from text instantly. WebCrypto hardware-accelerated, real-time output. Used in Bitcoin, TLS, and digital signatures. Zero uploads.

Bcrypt Hash Generator

Generate bcrypt hashes with configurable cost factor (4–31). Auto-salted, rainbow-table resistant, fully browser-based. Recommended for secure password storage.

Bcrypt Hash Verifier

Verify a password against a bcrypt hash instantly in your browser. Supports $2a$, $2b$, and $2y$ prefixes. Nothing is uploaded.

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files instantly in your browser.

Learn more

SHA-256 vs MD5 vs SHA-1: Which Hash Algorithm Should You Use?

MD5 collisions were cracked in 2004. SHA-1 fell in 2017. Here's which hash algorithm is safe today and when to use SHA-256, SHA-512, or BLAKE3.

Password Security in 2026: How Long to Crack Every Combination

See exact brute-force crack times for 4-20 character passwords. An RTX 4090 cracks 8-char passwords in 22 min. Full table + defense guide.