Convert ASCII to Keycodes
Map characters to JavaScript keyboard keyCodes. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Convert ASCII to Keycodes
- 1. Type the characters to look up. Enter the text whose key codes you need. Each character maps to the legacy JavaScript keyCode its key produces, so Ab1 returns 65 66 49.
- 2. Set the separator. The Separator option formats the code list. Spaces keep it readable while you cross-reference event logs; commas prepare it for pasting into an array of expected values.
- 3. Mind the keycode quirks. KeyCodes describe keys, not characters: a and A share code 65 because they live on the same key, and digits report 48 to 57 from the top row. That distinction explains most keycode confusion.
- 4. Copy the codes. Copy the values into your event handler, test script or automation config. The keycodes-to-ASCII companion translates captured codes back into representative characters.
When to use Convert ASCII to Keycodes
Convert ASCII to Keycodes tells you which JavaScript keyCode each character corresponds to. Mountains of existing code, tests and automation configs still compare event.keyCode against magic numbers, and this tool produces those numbers from real text instead of leaving you to count through a reference table.
- Maintaining legacy keyboard handlers. An older web app is full of checks like keyCode === 65 and you need to add another shortcut. Look up the letters here rather than trusting a half-remembered code.
- Scripting keyboard automation. Selenium scripts and browser macros sometimes want numeric key codes for synthesized events. Convert the string you intend to type into the exact sequence to dispatch.
- Writing keydown tests. A test simulates typing a shortcut and asserts on the events fired. Generating the expected keyCode list for the whole sequence keeps the assertion accurate without manual lookups.
- Debugging why a shortcut fails. A hotkey works on one keyboard layout but not another. Comparing the codes your handler expects with what the characters map to here narrows down the layout mismatch quickly.
Examples
Keycodes
Input
Ab1
Output
65 66 49
About the Convert ASCII to Keycodes tool
Convert ASCII to Keycodes is a free online tool that works entirely inside your web browser. Map characters to JavaScript keyboard keyCodes. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 81 ASCII utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with the Separator setting, and the result refreshes the moment you change it. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Does Convert ASCII to Keycodes cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.