How to Use the Binary, Hex & Decimal Converter
Type a number into any one of the four fields — binary, octal, decimal, or hexadecimal — and the other three update instantly, since each field only accepts valid digits for its own base and the converter recalculates all four simultaneously from whichever field you're actively editing.
The four-field layout is designed to make cross-base conversion immediate, without needing to convert one pair at a time.
Entering a value in any base
As covered in the positional-systems guide, each base only accepts its own valid digit set (binary accepts just 0 and 1, for example), which prevents accidentally entering an invalid digit for the base you're working in.
Using it for hex color or memory address work
As covered in the hex-vs-binary guide, this converter is a fast way to double-check the binary breakdown behind a hex value you're working with — useful when debugging low-level code or reasoning about how a color code splits into its underlying channels.