A1Z26 Cipher Converter
Convert letters to numbers using the A1Z26 cipher (A=1, B=2, C=3, ... Z=26). Perfect for puzzles, cryptography, and educational purposes.
A1Z26 Reference Table
What is A1Z26 Cipher?
The A1Z26 cipher is a simple substitution cipher that replaces each letter with its corresponding position in the alphabet. 'A' becomes 1, 'B' becomes 2, and so on until 'Z' which becomes 26.
This cipher is also known as the "letter-to-number cipher" or "alphabet position cipher." It's one of the simplest encryption methods and is often used in puzzles, geocaching, escape rooms, and educational contexts.
Examples
Example 1: Simple Word
HELLO → 8 5 12 12 15
Example 2: Full Sentence
HELLO WORLD → 8 5 12 12 15 23 15 18 12 4
Example 3: Decoding Numbers
3 15 4 5 → CODE
Common Use Cases
Cryptography & Code Breaking
Decode secret messages and learn basic encryption concepts.
Puzzles & Games
Create and solve puzzles for escape rooms, treasure hunts, and brain teasers.
Educational Activities
Teach children about the alphabet, numbers, and basic coding concepts.
Geocaching
Decode coordinates and clues in geocaching adventures.
How to Use the A1Z26 Converter
Converting Letters to Numbers (Encoding)
- Enter your text: Type or paste any text containing letters (A-Z) into the input box.
- Automatic conversion: The A1Z26 converter will automatically transform each letter to its corresponding number (A=1, B=2, C=3, through Z=26).
- Copy your result: Click the "Copy" button to save the converted numbers to your clipboard.
Converting Numbers to Letters (Decoding)
- Enter numbers: Type numbers between 1-26, separated by spaces (e.g., "8 5 12 12 15").
- Decode instantly: The letter to number converter will translate each number back to its corresponding letter.
- Get your message: See the decoded text appear instantly and copy it for use.
Frequently Asked Questions (FAQ)
What is the A1Z26 cipher?
The A1Z26 cipher (also known as the letter-number cipher or alphabet position cipher) is a simple substitution cipher where each letter is replaced by its position in the alphabet. A becomes 1, B becomes 2, and so on until Z which becomes 26. It's one of the most basic forms of encryption and is commonly used in puzzles, educational settings, and geocaching.
How do I decode A1Z26 numbers?
To decode A1Z26 numbers to letters, simply enter the numbers (1-26) separated by spaces into our converter. For example, entering "8 5 12 12 15" will give you "HELLO". Our A1Z26 decoder automatically recognizes number input and converts it back to letters.
What's the difference between A1Z26 and other ciphers?
Unlike Caesar cipher or Atbash cipher, A1Z26 uses direct numerical substitution rather than letter shifting. While ROT13 shifts letters by 13 positions, A1Z26 simply assigns each letter its position number. This makes it easier to learn but also easier to decrypt, making it perfect for beginners and educational purposes.
Can I use this for lowercase letters?
Yes! Our A1Z26 converter automatically handles both uppercase and lowercase letters. Both "A" and "a" will convert to 1, and both "Z" and "z" will convert to 26. The converter treats all letters the same regardless of case.
Is the A1Z26 converter free to use?
Absolutely! Our A1Z26 cipher converter is completely free with no registration required. You can convert unlimited text, upload files, and use all features without any cost. It works directly in your browser for maximum privacy and security.
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