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 Letter to Number Converter converts text letters into numbers based on their alphabetical index (A1Z26). Easily encode secret messages, solve puzzles, or format strings with customizable separators and base offsets.
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
Using this tool is simple and requires no signup or registration. 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 Text Toolbox?
Text Toolbox provides free, private, and instant online text tools. Unlike other text utility websites that require signup accounts or send your data to servers, all our tools process your text entirely in your browser. This means your content never leaves your device — we cannot see it, store it, or share it. Our tools are fast, lightweight, and work on any device with a modern web browser.