Binary to Decimal Converter
Convert a binary (base 2) number to decimal (base 10). Each binary digit is a power of two; add the ones that are set. Type a binary value to see its decimal, hex, and octal forms.
Worked example
1011 (binary) → 11 (decimal)
1011 = 8 + 0 + 2 + 1 = 11. Add the place values where the bit is 1.
Conversion details will appear here
Frequently asked questions
How do you convert binary to decimal?
Give each bit a place value that doubles from right (1, 2, 4, 8, …) and add the place values wherever the bit is 1.
What is 1111 in decimal?
Binary 1111 is 15 in decimal (8 + 4 + 2 + 1).