dCode - Online Ciphers, Solvers, Decoders, Calculators (2024)

  1. dCode
  2. dCode.fr

dCode.fr is a collection of over 900 tools to help solve games, riddles, ciphers, mathematics, puzzles, etc.

Word Game Solvers

dCode - Online Ciphers, Solvers, Decoders, Calculators (1)dCode offers tools to search/find words, for all word games and be sure to win, as with the Scrabble solver or Wordle. Ideal for finishing crosswords, cheating at longest word finder, or having fun with the anagram generator! For more criteria, check the generic word search, or list of words beginning with some letters (or ending with others) or, more effectively, advanced words search by regular expression.

dCode - Online Ciphers, Solvers, Decoders, Calculators (2)dCode provides tools to search for words in many dictionaries, guaranteeing help (cheat?) in all word games. See letters games tools!

Cryptography and Ciphers

dCode - Online Ciphers, Solvers, Decoders, Calculators (3)dCode, as the name implies, automatically decodes a large variety of encryptions. With its cipher identifier (that recognizes automatically more than 200 ciphers), Caesar cipher, Vigenere cipher, Polybius square, and dozens of other encryptions are quickly decrypted.

dCode offers a huge library of scripts for decoding or encoding messages with standard cryptography techniques. Check all crypto tools!

Codes and Alphabets

dCode - Online Ciphers, Solvers, Decoders, Calculators (4)dCode can speak hundreds of languages and lots of codes like Morse code, the A=1,Z=26 code, but also 1337 (Leet Speak) or the Braille alphabet. It can also generate barcodes or QR-Code. Ideal for treasure hunts or geocaches.

dCode can decode or encode messages with various symbols to replace our usual latin alphabet. See all codes' tools!

Calculators and Mathematics

dCode - Online Ciphers, Solvers, Decoders, Calculators (5)dCode make homeworks! Need an equation solver, make boolean calculations, compute prime numbers decomposition or need a cryptarithm solver? On dCode, it's automatic. The tools are made to be simple ranging from the GCD to the base-N converter through the combinations (k among n) generator, the probabilities, or the calculation of irreducible fractions. There are even practical tools like the number in letters converter.

dCode, its tools, its codes would be nothing without mathematics and its number theories and especially arithmetic. Check all math tools!

Computer Science and Algorithms

dCode - Online Ciphers, Solvers, Decoders, Calculators (6)dCode manages algorithms and informatics standards like ASCII, the Base 64, the MD5 password encryption or the Unicode standard. Everything is based on the binary and its derivatives: BCD or the Gray code. And for the exports, take a look at the Brainf*ck (and variants)!

dCode and its scripts are based on programming, its techniques, methods, and so there are a lot of tools for geeks. See more IT tools!

Puzzle Game Solvers

dCode - Online Ciphers, Solvers, Decoders, Calculators (7)dCode knows to play and win, make a random selection, find solutions for the countdown number game, win a Mastermind game, same for the Sudoku solver. More complex puzzle games are available such as the Magic Square or the Wordoku puzzle.

dCode loves games, from small puzzle games to world-famous board games, anything that is not based on chance can be modeled and solved by dCode. See more games tools!

Miscellaneous Tools and Data

dCode - Online Ciphers, Solvers, Decoders, Calculators (8)dCode it's also tons of tools for processing data like finding a difference between two texts, or generate random selections. dCode also handles image processing like RGB channel separation or word processing with the search by regular expressions. dCode also manages databases like the ISBN search, the French departments , tools for finding the IP address of a website etc. Finally there are useless but essential tools, like the upside down writing or the reverse writing.

dCode also has its unclassifiable pages, but very useful tools to complete the list of essential tools. Go to all misc tools!

See also: dCode's Tools List

Answers to Questions (FAQ)

How to search for a tool on dCode?

A search bar is available on every page. For an efficient search, type one or two keywords.

Example: caesar for the caesar cipher (and variants), count for the countdown number game solver

Where is the list of all dCode tools?

The All Tools page lists all dCode pages. The tools are regularly updated, according to the users' requests (you).

A link to the All Tools page is available on all pages of the site.

How to decrypt a message automatically?

dCode has an artificial intelligence to detect what type of encryption/cipher has been used to code a message: test our cipher recognizer.

Source code

dCode retains ownership of the "dCode.fr" source code. Except explicit open source licence (indicated Creative Commons / free), the "dCode.fr" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or the "dCode.fr" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, or API access for "dCode.fr" are not public, same for offline use on PC, mobile, tablet, iPhone or Android app!
Reminder : dCode is free to use.

Cite dCode

The copy-paste of the page "dCode.fr" or any of its results, is allowed (even for commercial purposes) as long as you credit dCode!
Exporting results as a .csv or .txt file is free by clicking on the export icon
Cite as source (bibliography):
dCode.fr on dCode.fr [online website], retrieved on 2024-06-16, https://www.dcode.fr/en

dCode - Online Ciphers, Solvers, Decoders, Calculators (2024)

FAQs

How to decode cypher code? ›

All substitution ciphers can be cracked by using the following tips:
  1. Scan through the cipher, looking for single-letter words. ...
  2. Count how many times each symbol appears in the puzzle. ...
  3. Pencil in your guesses over the ciphertext. ...
  4. Look for apostrophes. ...
  5. Look for repeating letter patterns.
Mar 26, 2016

What is DCode? ›

What is DCode? DCode™ is a FREE forensic utility for converting data found on desktop and mobile devices into human-readable timestamps.

What cipher uses a 5x5 grid? ›

The Playfair cipher uses a 5×5 grid of letters, and encrypts a message by breaking the text into pairs of letters and swapping them according to their positions in a rectangle within that grid: "HI" becomes "BM".

What is the easiest cipher to decode? ›

One of the simplest types of encryption is the Shift Cipher. It provides a good introduction to encryption because it is easy to understand. The Shift Cipher is also called the "Caesar Cipher", because Julius Caesar liked to use it for his personal correspondence.

What is the most difficult cipher to decode? ›

The Vigenère cipher is a method of encrypting messages by using a series of different Caesar ciphers based on the letters of a particular keyword. The Vigenère cipher is more powerful than a single Caesar cipher and is much harder to crack.

What is the most advanced cipher? ›

AES 256-bit encryption is the strongest and most robust encryption standard that is commercially available today.

What is the most secure cipher algorithm? ›

AES-256 encryption is extremely secure. It is the most secure encryption algorithm available today and is used extensively in government and military applications, as well as by businesses operating in highly regulated industries.

What is the most common block cipher? ›

AES - A US Federal Government standard since 2002, AES or Advanced Encryption Standard is arguably the most widely used block cipher in the world. It has a block size of 128 bits and supports three possible key sizes - 128, 192, and 256 bits. The longer the key size, the stronger the encryption.

What is the Caesar secret code? ›

The Caesar Cipher, used by Julius Caesar around 58 BC, is a substitution cipher that shifts letters in a message to make it unreadable if intercepted. To decrypt, the receiver reverses the shift. Arab mathematician Al-Kindi broke the Caesar Cipher using frequency analysis, which exploits patterns in letter frequencies.

How to decode a transposition cipher? ›

To decipher it, the recipient has to work out the column lengths by dividing the message length by the key length. Then, write the message out in columns again, then re-order the columns by reforming the key word.

What is mod 26 in math? ›

Here, modulo 26 means that numbers which are separated by multiples of 26 (such as zero, 26, 52, 78, etc) are congruent to one another. Negative 27 and positive 25 are separated by 52, which is a multiple of 26, and are therefore congruent to one another.

How to decrypt cypher value? ›

Write down the alphabet in order from A to Z. Replace each letter of the message with the corresponding letter from the new alphabet. For example, if the shift value is 3, the word “hello” would become “khoor”. To decrypt the message, shift each letter back by the same amount.

What is the formula for cipher decryption? ›

Caesar Cipher is one of the simple methods in cryptography. This method requires two inputs one a number and a plaintext. The Time Complexity and Space Complexity both are O(N). The encryption formula is En(x) = (x + n) mod 26 and the Decryption formula is Dn(x) = (x – n) mod 26.

How does cypher code work? ›

A cipher transforms data by processing the original, plaintext characters or other data into ciphertext. The ciphertext should appear as random data. Traditionally, ciphers used these two main types of transformation: Transposition ciphers keep all the original bits of data in a byte but mix their order.

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