Base -2 Converter & Calculator (Digits 0, 1)

Number System Converter

Decimal → Negabinary
Negabinary → Decimal
Std Binary → Negabinary
Negabinary → Std Binary

About Negabinary (Base -2)

Negabinary is a positional numeral system with base -2 and digits 0 and 1. It's a non-standard system that can represent all integers—positive, negative, and zero—without requiring a separate minus sign.

Its places represent alternating positive and negative powers of two: `...(-8), (+4), (-2), (+1)`. This unique property means that simple operations like negation are not just a matter of flipping bits, but require full arithmetic, making it an interesting system to study.

Negabinary Calculator

Negabinary Utilities

Number Range Calculator

Find the range of decimal integers that can be represented with a specific number of negabinary bits.

Bitwise Operations

Perform a bitwise operation on two negabinary numbers.

Parity Checker

Instantly determine if a negabinary number represents an even or odd integer.

Negabinary Reference Chart

Value Chart

Comparison of Decimal and Negabinary values. Note how positive and negative numbers are represented without a sign.

DecimalNegabinary

Quick Quiz: Test Your Knowledge!

What is the decimal value of 1101?

 

Score: 0