Binary Converter
Convert binary and decimal whole numbers with arbitrary precision.
Decimal
How binary number conversion works
Example
11111111 Converted instantly in your browser - Binary is a base-2 number system that uses only the digits 0 and 1.
- Each position represents a power of two, starting with 2⁰ at the right edge.
- EncodeLab uses arbitrary-precision integers, so large whole numbers are not rounded.
More encoding tools
Binary Translator Translate text and binary instantly. Everything stays in your browser. Text to Binary Turn readable text into UTF-8 binary bytes. Binary to Text Decode valid 8-bit binary groups into readable text. Morse Code Translator Translate text to Morse code and decode Morse back to text. Hex Converter Translate text and hexadecimal UTF-8 bytes in either direction. Text to Hex Convert readable text into hexadecimal UTF-8 bytes.
Frequently asked questions
What does binary 11111111 equal?
Binary 11111111 equals decimal 255.
Is my input uploaded?
No. EncodeLab performs this conversion locally in your browser. Your input is not sent to an EncodeLab server or stored by us.
Can this converter handle large numbers?
Yes. It uses arbitrary-precision integers instead of floating-point arithmetic.
Does it convert binary fractions?
This version converts whole numbers only and does not currently accept a binary point.