How to use the Binary to Negabinary Converter
- Enter or paste your input in the box (or set the options, if the tool needs no input).
- Adjust the options to match what you need — the result updates as you type.
- Copy the result or download it, and keep editing if you want a different outcome.
What does this tool do?
Negabinary uses a base of −2, so it can write positive and negative numbers without a sign bit. Paste a binary number and see it in base −2. Tick the signed option to read the input as two's complement first.
Everything runs in your browser, so nothing you enter is uploaded or stored.
Why use it?
- Free, with no sign-up and no limits.
- Instant results as you type.
- Private — your data stays on your device.
Example
Input: 1011 (decimal 11)
Result: 11111 (16 − 8 + 4 − 2 + 1 = 11)
Privacy
Everything you type is processed in your browser. Nothing you enter is sent to our servers or stored by us. There's no account to create and nothing to install.
Frequently asked questions
Why would anyone use base −2?
It can represent every integer without a separate sign, which makes it a neat curiosity in computer science.
Is the Binary to Negabinary Converter free to use?
Yes. It is free, needs no account and has no daily limit.
Last reviewed by the M2Toolkit team.