Number Base Converter

Any base to any base, 2 through 36, with unlimited BigInt precision. Edit any row and everything follows — plus a clickable bit grid, two's complement view, step-by-step working, bitwise operations, and a text-bytes pane. Everything runs in your browser.

Convert

From base

To base

Fractional digits

—

base 16

Common bases — every row editable

BINARY (2)

OCTAL (8)

DECIMAL (10)

HEX (16)

Bit grid — click any bit to toggle

Width Read as

The grid shows the integer part only, wrapped to the chosen width. Clicking a bit updates the converter above.

Steps

Positional expansion (source → decimal)

Each digit times its place value. Click a row to highlight that digit in the source number.

Pos	Digit	Base^pos	Term

Repeated division (decimal → target)

Read the remainders bottom-up. Click a row to highlight that digit in the result.

#	Division	Quotient	Remainder

Steps work on the integer part only; fractional digits are produced by repeated multiplication and are marked "truncated" when cut short.

Bitwise operations

Operand A Operand B (shift count for << and >>)

Operand base Operation Width

Text ↔ bytes

Encoding

Text → bytes

Hex bytes → text (e.g. 48 65 6c 6c 6f)

UTF-8 handles any Unicode text; latin-1 maps each character to a single byte (characters above U+00FF are shown as "?").