ASCII Table — Decimal, Hex, Binary & HTML Codes Guide

Tools · Free guide
ASCII character code table — 3D illustration

Look up every ASCII character code in two views: a compact expand grid for quick scanning, or a detailed collapse table with binary, HTML entities, and plain-language descriptions. Search filters codes 0–127 and extended 128–255. The TetraKits ASCII Table runs entirely in your browser — free, private, and ready on mobile or desktop.

Overview

Debugging encoding issues, writing parsers, and learning how computers represent text all start with ASCII. One reference covers decimal, hexadecimal, binary, and HTML entity forms — with search across standard and extended ranges.

How to use the ascii table

  1. Choose a view — Switch between Expand (compact grid with Dec, Hex, Char) and Collapse (full detail with binary, HTML, and descriptions).
  2. Search or browse — Filter by decimal value, hex code, or character. Scroll standard ASCII (0–127) or extended codes (128–255).
  3. Copy the values you need — Use decimal, hex, or HTML entity codes in your project. For named entities like ©, see HTML entity codes.

Common use cases

  • Choose a view: Switch between Expand (compact grid with Dec, Hex, Char) and Collapse (full detail with binary, HTML, and descriptions).
  • Search or browse: Filter by decimal value, hex code, or character.
  • Copy the values you need: Use decimal, hex, or HTML entity codes in your project.
  • Bookmark for quick access: Save the tool for repeat tasks without installing an app.

Frequently asked questions

What is the difference between Collapse and Expand?

Expand shows a compact multi-column grid with Dec, Hex, and Char. Collapse shows one detailed table with Dec, Hex, Binary, HTML entity, Char, and a written description for each code.

What is the ASCII code for the letter A?

Uppercase A is decimal 65, hexadecimal 41, binary 01000001, and HTML entity A.

Does this table include extended ASCII?

Yes. Characters 128 through 255 are listed in the Extended ASCII section with Windows-1252, ISO-8859-1, or UTF-8 encoding notes.

When should I use decimal vs hex?

Decimal is common in programming APIs and char codes. Hex (0x41) is standard in memory dumps, color values, and low-level debugging.

Is this ASCII table free?

Yes. Free reference with search and both view modes; no signup required.