Cryptography Calculator

The cryptography calculator is used to encode or decode text using different classic ciphers. These ciphers are simple techniques that convert plain text into coded text to protect or hide information. This free MathCalc tool makes the process quick and easy.

Cryptography Calculator

Encode/decode using various cipher methods

How to Use
  1. Fill in the Required Values
  2. Click "Calculate" Button
  3. View Step-By-Step Solution

What is cryptography?

Cryptography is the practice of securing information by transforming it into coded form. It prevents unauthorized people from understanding the data.

How to use the MathCalc cryptography calculator

  • Choose a cipher type from the Caesar cipher, Vigenere cipher, ROT13, Atbash, Morse Code, and binary to text.
  • Choose an operation from encode or decode.
  • Enter input text.
  • Enter shift value (for Caesar).
  • Enter keyword (for Vigenere).
  • After entering your values, click on “calculate”, and in seconds, you will see the result.

Example 1: If we choose the “Caesar cipher”

Choose encode from the operation options. Enter “Hello” in the input text, 3 in the shift value, and 0 in the keyword.

Step by step:

  • Caesar Encode
  • Input: "Hello"
  • Shift value: 3
  • Each letter is shifted by 3 positions in the alphabet.

result:

  • Khoor

Example 2: If we choose the “Vigenère Cipher”

Choose encode from the operation options. Enter “HELLO” in the input text and “KEY” in the keyword.

Step by step:

  • Vigenère Encode
  • Input: "HELLO"
  • Keyword: "KEY" (repeated to match the length of the input → "KEYKE")
  • Shift each letter of the input according to the corresponding keyword letter. <br> H (shifted by K=10) → R<br>E (shifted by E=4) → I<br>L (shifted by Y=24) → J<br>L (shifted by K=10) → V<br>O (shifted by E=4) → S

result:

  • RIJVS

Example 3: If we choose the ROT13

Choose encode from the operation options. Enter HELLOWORLD in the input text, enter 13 in the shift value, and 0 in the keyword.

Step by step:

  • Rot13 Encode
  • Input: "HELLOWORLD"
  • ROT13: Each letter shifted by 13 positions
  • Note: ROT13 is self-reciprocal (encode = decode)

result:

  • URYYBJBEYQ

Example 4: If we choose the Atbash Cipher

Choose encode from the operation options. Enter ABC in the input text. Important rule: (Shift value or keyword is not required for the atbash cipher, but according to the regulation of MathCalc, fill all input fields. Enter 1 in the shift value and 0 in the keyword).

Step by step:

  • Atbash Encode
  • Input: "ABC"
  • Atbash cipher: A↔Z, B↔Y, C↔X, etc.
  • Each letter is mapped to its opposite in the alphabet.

result:

  • Result: ZYX

Example 5: If we choose Morse code

Choose encode from the operation options. Enter SOS in the input text. Enter 1 in the shift value or 0 in the keyword, just like the previous example.

Step by step:

  • Morse code Encode
  • Input: "SOS"
  • Converting text to Morse code
  • Each character is mapped to dots and dashes

result:

  • ... --- ...

Example 6: Binary to text

Choose decode from the operation option. Enter 01001000 01001001 in the input text. Enter 1 in the shift value and 0 in the keyword, same as the previous example.

Step by step:

  • Binary text decodes
  • Input: "01001000 01001001"
  • Converting binary to text
  • Each 8-bit binary is converted to a character

result:

  • "HI"

Why use the MathCalc cryptography calculator?

Get Quick Results

You can encode or decode various cipher methods, such as the Caesar cipher, Vigenere cipher, ROT13, Atbash cipher, Morse code, and binary to text in one place. Enter your values and get quick results in seconds.

Reduce Human Error

Manual calculation can lead to minor mistakes that cost you money or points. This tool provides proven formulas to reduce errors, and your results are always right. To avoid mistakes, use the MathCalc Cryptography calculator.

  • Example: If you want to decode 01001000 01001001 using binary text. Enter your input, and get an accurate (HI) result in seconds.

User-Friendly

This MathCalc encodes and decodes text with Caesar cipher, Vigenere, ROT13, Atbash, Morse Code, or binary to text in one calculator. It has a simple and clear interface. Anyone can use it easily.

FAQ

What is the difference between ROT13 and the Caesar Cipher?

ROT13 is a fixed Caesar Cipher with a shift of 13. Caesar Cipher is not fixed with any specific shift.

Is binary to text cryptography?

It is more about data representation, but it helps understand text encoding.

What is a Cryptography Calculator?

A Cryptography Calculator is an online tool that allows you to easily encode and decode text using different classical ciphers such as Caesar, Vigenère, and others. It helps students, learners, and professionals quickly test cryptographic methods without doing manual calculations.

Which ciphers can I use with this tool?

Our Cryptography Calculator supports popular encryption and decryption techniques like Caesar Cipher, Vigenère Cipher, Atbash Cipher, and more. Each cipher comes with step-by-step results so you can understand how the encryption works.

Do I need programming knowledge to use this tool?

No. The Cryptography Calculator is designed for everyone, from beginners to advanced users. Simply enter your text, select the cipher type, provide any required key or shift value, and the tool will instantly show you the result.

Is the Cryptography Calculator secure to use?

Yes. The tool runs directly in your browser and does not save or share your input text. It’s ideal for learning, experimenting, and practicing cryptography without security risks.