Convert binary (base 2) numbers to decimal (base 10) instantly, updating live as you type. Binary uses only the digits 0 and 1, with each position worth twice the one to its right, and this tool sums those place values for you so you do not have to add powers of two by hand. It is useful for computer science coursework, understanding how computers store numbers, debugging bit flags, and reading binary output. Type a string of ones and zeros and the decimal value appears immediately, and the tool flags anything that is not valid binary so you catch typos. It works with numbers well beyond a byte. Everything is computed in your browser, so it is fast, keeps your input private, and continues to work without an internet connection after loading.