Binary to Negabinary Converter

Negabinary is a base-negative-two positional system. Like binary, it uses only 0 and 1, but the place values alternate sign: 1, -2, 4, -8, 16, -32, and so on. It can represent negative numbers without a sign bit.

Yes. You can input a signed decimal or two’s-complement binary value. The tool interprets the sign correctly and produces the corresponding negabinary string.

It lets you represent negative numbers naturally without needing a separate sign convention. It is primarily a theoretical and educational system but appears in some specialized DSP and arithmetic research.

JavaScript BigInt, so any practical integer size (hundreds of digits) converts exactly without rounding.

Yes. Conversion runs entirely in your browser. Nothing is uploaded or logged.

No. The tool is fully client-side – nothing is sent to a server, logged, or stored, and the tool keeps working offline once the page has loaded.

Yes. No sign-up, no limits, no hidden costs. Because everything runs in your browser, there is no server bill behind the scenes that would force a paywall.

Yes. Step-by-step mode shows each division by -2 and the resulting remainder, which is the standard algorithm for base-negative-two conversion.

Yes, a complementary negabinary to binary converter is available for the reverse operation.

Zero in negabinary is simply 0, the same as in regular binary.