Binary to Decimal Converter
Convert binary numbers to decimal instantly, with no size limit.
100% private, runs in your browser
—
Converts live as you type, entirely in your browser using arbitrary-precision math — no size limit and nothing is sent anywhere.
Need the opposite? Use Decimal to Binary Converter
What is Binary to Decimal Converter?
Paste a binary number (made only of 0s and 1s) and get its decimal equivalent instantly. Uses arbitrary-precision math under the hood, so there's no limit on how large a number you can convert.
FAQ
Any string made only of the digits 0 and 1. Anything else (letters, spaces, other digits) is flagged as invalid.
No — the conversion uses JavaScript's BigInt, so arbitrarily long binary numbers convert without losing precision.