Binary to Decimal

Binary

Decimal

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Convert binary numbers to decimal. Enter a sequence of 0s and 1s.

Conversion happens locally in your browser. No data is sent anywhere.

FAQ

What is 11111111 in decimal?: 11111111 in binary equals 255 in decimal (128+64+32+16+8+4+2+1).
Why is binary important?: Computers use binary because electronic circuits have two states: on (1) and off (0). All computing is built on this foundation.