Integer as Two's Complement Binary: Convert and Write Numbers as Signed Binary in Two's Complement Representation

Convert signed integer numbers from the decimal system (base ten) to signed binary in two's complement representation

How to convert a base 10 signed integer number to signed binary in two's complement representation:

1) Divide the positive version of number repeatedly by 2, keeping track of each remainder, till getting a quotient that is equal to 0.

2) Construct the base 2 representation by taking the previously calculated remainders starting from the last remainder up to the first one, in that order.

3) Construct the positive binary computer representation so that the first bit is 0.

4) Only if the initial number is negative, switch all the bits from 0 to 1 and from 1 to 0 (reversing the digits).

5) Only if the initial number is negative, add 1 to the number at the previous point.

The latest signed integer numbers written in base ten converted from decimal system to binary two's complement representation

Convert and write the signed integer number 281,475,098,388,407 from the decimal system (base 10) to a signed binary in two's complement representation Apr 30 22:48 UTC (GMT)
Convert and write the signed integer number -331 from the decimal system (base 10) to a signed binary in two's complement representation Apr 30 22:45 UTC (GMT)
Convert and write the signed integer number -331 from the decimal system (base 10) to a signed binary in two's complement representation Apr 30 22:43 UTC (GMT)
Convert and write the signed integer number 931,500 from the decimal system (base 10) to a signed binary in two's complement representation Apr 30 22:43 UTC (GMT)
Convert and write the signed integer number 931,500 from the decimal system (base 10) to a signed binary in two's complement representation Apr 30 22:41 UTC (GMT)
Convert and write the signed integer number 1,011,011,101,186 from the decimal system (base 10) to a signed binary in two's complement representation Apr 30 22:41 UTC (GMT)
Convert and write the signed integer number -58,269 from the decimal system (base 10) to a signed binary in two's complement representation Apr 30 22:40 UTC (GMT)
Convert and write the signed integer number 50,069,382 from the decimal system (base 10) to a signed binary in two's complement representation Apr 30 22:33 UTC (GMT)
Convert and write the signed integer number 150,446 from the decimal system (base 10) to a signed binary in two's complement representation Apr 30 22:31 UTC (GMT)
Convert and write the signed integer number 1,163,670,569,177,153 from the decimal system (base 10) to a signed binary in two's complement representation Apr 30 22:17 UTC (GMT)
» New: All the Calculations Performed by Our Visitors: Integer numbers converted and written as signed binary in two's complement representation. Data organized on a Monthly Basis

How to convert signed integers from decimal system to signed binary in two's complement representation

Follow the steps below to convert a signed base 10 integer number to signed binary in two's complement representation:

  • 1. If the number to be converted is negative, start with the positive version of the number.
  • 2. Divide repeatedly by 2 the positive representation of the integer number, keeping track of each remainder, until we get a quotient that is zero.
  • 3. Construct the base 2 representation of the positive number, by taking all the remainders starting from the bottom of the list constructed above. Thus, the last remainder of the divisions becomes the first symbol (the leftmost) of the base two number, while the first remainder becomes the last symbol (the rightmost).
  • 4. Binary numbers represented in computer language must have 4, 8, 16, 32, 64, ... bit length (a power of 2) - if needed, add extra bits on 0 in front (to the left) of the base 2 number above, up to the required length, so that the first bit (the leftmost) will be 0, correctly representing a positive number.
  • 5. To get the negative integer number representation in signed binary one's complement, replace all 0 bits with 1s and all 1 bits with 0s (reversing the digits).
  • 6. To get the negative integer number, in signed binary two's complement representation, add 1 to the number above.

Example: convert the negative number -60 from the decimal system (base ten) to signed binary in two's complement:

  • 1. Start with the positive version of the number: |-60| = 60
  • 2. Divide repeatedly 60 by 2, keeping track of each remainder:
    • division = quotient + remainder
    • 60 ÷ 2 = 30 + 0
    • 30 ÷ 2 = 15 + 0
    • 15 ÷ 2 = 7 + 1
    • 7 ÷ 2 = 3 + 1
    • 3 ÷ 2 = 1 + 1
    • 1 ÷ 2 = 0 + 1
  • 3. Construct the base 2 representation of the positive number, by taking all the remainders starting from the bottom of the list constructed above:
    60(10) = 11 1100(2)
  • 4. Bit length of base 2 representation number is 6, so the positive binary computer representation of a signed binary will take in this particular case 8 bits (the least power of 2 larger than 6) - add extra 0 digits in front of the base 2 number, up to the required length:
    60(10) = 0011 1100(2)
  • 5. To get the negative integer number representation in signed binary one's complement, replace all the 0 bits with 1s and all 1 bits with 0s (reversing the digits):
    !(0011 1100) = 1100 0011
  • 6. To get the negative integer number, signed binary in two's complement representation, add 1 to the number above:
    -60(10) = 1100 0011 + 1 = 1100 0100
  • Number -60(10), signed integer, converted from decimal system (base 10) to signed binary two's complement representation = 1100 0100