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ASCII Converter — Characters to Decimal, Hex, Binary & Octal

Convert characters to ASCII / Unicode codepoints in decimal, hex, binary and octal — or render a live table for any input string.

Miễn phí Không cần đăng ký Chạy trên trình duyệt Tôn trọng riêng tư Updated
Decimal
Hex
Binary
Octal
Unicode
In ASCII range?

Character
Decimal
Hex
Binary
Octal
Unicode
UTF-16 units

Showing the first characters.

# Char Dec Hex Bin Oct

Cách dùng

  1. 1 Pick a mode — Char → Code, Code → Char, or Live table.
  2. 2 In Code → Char, prefix with 0x (hex), 0b (binary) or 0o (octal) to enter any base.
  3. 3 Live table shows each character of a string with its code in four bases.
  4. 4 Click any value to copy via your browser shortcut.

Vì sao dùng công cụ này

  • Three modes — single character, single code, or a per-character table.
  • Handles full Unicode — including astral-plane emoji via codepoints up to U+10FFFF.
  • Code input auto-detects the base via 0b / 0o / 0x prefixes.
  • Pure browser, zero dependencies.

Câu hỏi thường gặp

Is this ASCII-only?

No — the underlying engine handles any Unicode codepoint up to U+10FFFF. The "ASCII range" badge on each row tells you which characters fit in the original 7-bit ASCII set (≤ 127).

What are UTF-16 units?

JavaScript stores strings in UTF-16. Characters above U+FFFF take two 16-bit units (a surrogate pair). The UTF-16 units row shows those raw 16-bit codes.

Why is the live table capped at 200 characters?

Rendering one DOM row per character gets expensive on long pastes. 200 covers the vast majority of inspections — for bigger jobs, run the input through your editor instead.

Need raw bytes instead of codepoints?

Use our String to Hex Converter for UTF-8 byte output, or the UTF-8 Converter for codepoint and \u{HEX} escapes.

ASCII Converter là gì?

An ASCII Converter is a tool that converts characters to their ASCII or Unicode code points in decimal, hexadecimal, binary, and octal, and converts code points back to characters. It can also render a live table mapping each character of an input string to its code-point values. The conversion runs entirely in the browser.

Tóm tắt

ASCII Converter là công cụ lập trình miễn phí của Zerethon Tools. Convert characters to ASCII / Unicode codepoints in decimal, hex, binary and octal — or render a live table for any input string. Chạy hoàn toàn trong trình duyệt — không đăng ký, không tải lên.

Danh mục
Lập trình
Giá
Miễn phí
Quyền riêng tư
Chạy trên trình duyệt
Đăng ký
Không cần

Quyền riêng tư

Dữ liệu của bạn không bao giờ rời khỏi trình duyệt trừ khi được nêu rõ. ASCII Converter chạy hoàn toàn phía client — không tải lên máy chủ, không ghi log, không theo dõi dữ liệu bạn nhập.

So sánh

Binary vs Hexadecimal

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