Every developer eventually needs to know what code 27 or 0x0A actually is. This searchable ASCII reference covers all 128 standard codes in decimal, hex, octal, and binary at once.
What Is the ASCII Table Reference?
A searchable, filterable table of the full 7-bit ASCII character set (codes 0–127), showing each code’s character, decimal value, hex value, octal value, binary value, and name — including the non-printing control codes like NUL, BEL, LF, and ESC.
How to Use It
- Open the tool at /tools/ascii-table.
- Scroll the full table, or type a character, decimal code, or hex code into the search box to filter instantly.
- Use the “Show” dropdown to narrow the list to printable characters only or control codes only.
Key Features
- All 128 standard ASCII codes — printable characters and control codes together.
- Four numeric representations per row — decimal, hex, octal, and binary.
- Instant search by character, decimal value, or hex value.
- Named control codes (NUL, BEL, LF, CR, ESC, and the rest), so you can look up what an unfamiliar code actually means.
When to Use This Tool
- Looking up an escape code or control character you found in a log file or binary dump.
- Converting between decimal, hex, octal, and binary for a specific ASCII character.
- Teaching or learning the ASCII character set.
Try It Now
Open ASCII Table Reference directly, or press ⌘K and type the tool name from anywhere on the site.
Part of the References collection on WebdevToolbox — free, browser-based developer tools with no login required.