About the Two’s Complement
Two’s Complement converts numbers between bases. Programmers work with several number systems — binary (base 2), octal (base 8), decimal (base 10) and hexadecimal (base 16) — and this tool converts Two’s Complement accurately, handling multiple space-separated values at once.
How Two’s Complement works
Invert every bit, then add 1.
Worked example: 01010 → invert 10101 → +1 → 10110
Common uses
- Programming, debugging and low-level data work.
- Converting color codes, memory addresses and flags.
- Learning how number systems relate.
- Reading binary or hex data by hand.
Frequently asked questions
Can I convert multiple numbers at once?
Yes — separate each value with a space and every one is converted in order.
Does this run on a server?
No. The conversion happens entirely in your browser, so your data stays private.