Binary Subtraction Calculator

Use the binary subtraction calculator whenever you want to quickly find the result of the subtraction of two binary numbers.

Binary digits, or use the base select.
Clear
Result100011011 + 110 = 17 in decimal
Binary10001
Octal21
Decimal17
Hexadecimal11
Bits used5

Every operation

OperationBinaryDecimal
+1000117
1015
×100001066
÷ (whole)11
remainder1015

The rule

the four operations, carried out in binary

Binary arithmetic is the same arithmetic

Adding in binary works exactly as in decimal — you just carry at 2 instead of 10. 1011 + 110 is 11 + 6 = 17, or 10001. Multiplication reduces to shifting and adding, which is precisely how hardware does it.