Letter to Number Converter
Free online letter to number converter. Convert text letters to their alphabet indexes (A1Z26 cipher).
About This Free Online Letter to Number Converter
Our free letter-to-number converter turns letters into their position in the alphabet, so A becomes 1, B becomes 2, and so on through Z as 26. Type or paste any word, name, or sentence and the tool maps each letter to its number instantly. This simple A1Z26 cipher is a favorite for classroom math and spelling activities, escape-room and puzzle design, geocaching clues, gematria-style word values, and basic coded messages between friends. It is also handy for generating numeric seeds from words or teaching kids how letter substitution works. The conversion runs entirely in your browser and updates the moment you type, so there is no waiting, no signup, and nothing you enter is ever sent to a server.
Features of Our Letter to Number Converter
- Formats characters to numbers instantly
- Supports Space, Comma, Dash, and Custom separators
- Toggles between A=1 (1-based) and A=0 (0-based) offsets
- Option to ignore or preserve punctuation and spaces
How to Use the Letter to Number Converter
The Letter to Number Converter works right in your browser — no signup, no installation. Follow these steps:
- Type or paste your text into the input field.
- Choose the separator to place between numbers.
- Configure offset preference (1-based vs 0-based).
- Copy the resulting numeric output.
Frequently Asked Questions About Letter to Number Converter
Does this handle non-English letters?
It maps standard A-Z English characters. Non-English characters are either ignored or output directly based on settings.
Is it case sensitive?
No, A1Z26 alphabet mapping assigns the same number to uppercase and lowercase letters (e.g. A and a are both 1).
Why Choose the Letter to Number Converter?
Converting data should be quick and lossless. The Letter to Number Converter transforms your input the instant you paste it, handles edge cases cleanly, and does all the work in your browser — so there is no upload, no waiting, and no copy of your data on a server somewhere.