About Letters2NumbersConverter.com

Who I am

I'm John Reed, the creator and editor of Letters2NumbersConverter.com. I've spent years working with text encoding systems — first as a hobby solving escape room puzzles and geocaching ciphers, and later building tools to help other people do the same thing faster. I write every article on this site myself, testing each method and tool against real puzzles before publishing.

Why I built this

When I started solving letter-number ciphers, I kept hitting the same problem: most tools online were either too narrow (only A1Z26), cluttered with ads, or required an account. I wanted a single place that handled A1Z26, A0Z25, ASCII, hex, binary, Morse code, Atbash, Caesar shifts, and every other encoding I ran into — all free, all in the browser, no sign-up.

I built the first version of the converter in an afternoon and shared it with my geocaching group. The feedback was immediate. People wanted more encoding types, more cipher tools, more explanations. That feedback turned a single-page tool into the site you're using now — over 100 tools covering everything from gradient palette generators to certificate decoders.

How the site works

Every tool on this site runs entirely in your browser. No files are uploaded to a server, no data is stored, and nothing requires an account. The code uses the Web Crypto API, Canvas API, and standard JavaScript — the same APIs your browser already ships with. I prioritize privacy by design: if a tool can run offline, it does.

The blog covers the techniques behind each tool — how A1Z26 maps letters to numbers, how Caesar shifts work, how k-means clustering pulls colors from an image. My goal with each post is to explain the actual mechanism, not just tell you to click a button.

Get in touch

If you find a bug, want a new tool added, or have a question about a specific cipher or encoding method, I read every message personally. The best way to reach me is through the contact page.