Hex Converter
See any number in decimal, hex, binary, octal and ASCII without leaving the editor.
Hover over a literal, select a value and press a shortcut, or rewrite it in place. Built for firmware, embedded and low-level work where you need 0x40011000, 0b10110010 and "Hello" as bytes several times a day.
日本語の説明はこちら
Features
Hover to convert
Hover over a number literal to see every representation at once. Each row has buttons to copy the value or replace the literal with it.
- Decimal, hex, binary and octal, with binary grouped in nibbles
- Signed reading (
INT8 / INT16 / INT32 / INT64) when the top bit is set
- ASCII character or control code name (
LF, ESC, …) for byte-sized values, and the decoded string for values such as 0x48656C6C6F
Convert a selection with a shortcut
Select any text and press Ctrl+Alt+H. Text without a prefix is ambiguous, so every plausible reading is shown.
| Selected text |
What you get |
FF |
The value read as hex, plus the ASCII codes of the text |
10 |
The value read as decimal, hex and binary |
-1 |
Two's complement in the smallest width that fits |
greeting |
ASCII codes of each character (hex / decimal / binary) |
0x48, 0x65, 0x6C, 0x6C, 0x6F |
The byte list decoded to "Hello" |
Replace in place
Press Ctrl+Alt+J on a value and pick a format to rewrite it in place, or click the replace button in the hover. With multiple cursors, every location is converted to the same format.
Converter panel
Open with Ctrl+Alt+Shift+H. Type in any field and the others update as you type.
- Number: DEC / HEX / BIN / OCT / ASCII fields kept in sync, an 8 / 16 / 32 / 64-bit width switch, clickable bits, and the signed value
- Text ⇄ ASCII codes: convert between text and hex, decimal or binary byte lists, in either direction
- Follows your color theme, light or dark
Supported literals
| Form |
Example |
| Decimal |
255, 1_000_000 |
| Hex |
0xFF, 0FFh |
| Binary |
0b1010_1010 |
| Octal |
0o17 |
| Verilog / SystemVerilog |
8'hFF, 4'b1010, 'd10 |
| C / C++ / Rust / JS suffixes |
255U, 0xFFUL, 10n |
Shortcuts
| Command |
Windows / Linux |
macOS |
| Show conversions for the selection / value at the cursor |
Ctrl+Alt+H |
Ctrl+Option+H |
| Convert and replace |
Ctrl+Alt+J |
Ctrl+Option+J |
| Open the converter panel |
Ctrl+Alt+Shift+H |
Ctrl+Option+Shift+H |
All three are also in the editor's right-click menu and the Command Palette (search for "Hex Converter"). You can rebind them in Keyboard Shortcuts.
Settings
| Setting |
Default |
Description |
hexConverter.hover.enabled |
true |
Show conversions when hovering with the mouse |
hexConverter.hover.decimal |
true |
Also show the hover for plain decimal numbers. Turn this off if the hover on every number gets in the way |
The shortcut popup works even when these are turned off.
Language
The UI is available in English and Japanese, following VS Code's display language.
Feedback
Found a bug or have an idea? Please open an issue on GitHub.
License
MIT
