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Original 2026-01-01

Modified 2026-02-28

1 51 can be converted easily from decimal to binary. The methods mentioned below will help us convert the number. Let’s see how it is done.

2 Expansion Method:Let us see the step-by-step process of converting 51 using the expansion method.

3 Step 1 -Figure out the place values: In the binary system, each<a>place value</a>is a<a>power</a>of 2. Therefore, in the first step, we ascertain the powers of 2. 2^0 = 1 2^1 = 2 2^2 = 4 2^3 = 8 2^4 = 16<a>2^5</a>= 32 2^6 = 64 Since 64 is<a>greater than</a>51, we stop at 2^5 = 32.

4 Step 2 -Identify the largest power of 2: We stopped at 2^5 = 32. In this step, identify the largest power of 2<a>less than</a>or equal to the given number, 51. Since 2^5 is the number we are looking for, write 1 in the 2^5 place. Now the value of 2^5, which is 32, is subtracted from 51. 51 - 32 = 19.

5 Step 3 -Identify the next largest power of 2: Find the largest power of 2 that fits into the result of the previous step, 19. The next largest power of 2 is 2^4, which is less than or equal to 19. Write 1 in the 2^4 place. Then subtract 16 from 19. 19 - 16 = 3.

6 Step 4 -Identify the next largest power of 2: Find the largest power of 2 that fits into 3. The next largest is 2^1, which is less than or equal to 3. Write 1 in the 2^1 place. Then subtract 2 from 3. 3 - 2 = 1.

7 Step 5 -Identify the next largest power of 2: Find the largest power of 2 that fits into 1, which is 2^0. Write 1 in the 2^0 place. Then subtract 1 from 1. 1 - 1 = 0.

8 Step 6 -Identify the unused place values: In steps 2, 3, 4, and 5, we wrote 1 in the 2^5, 2^4, 2^1, and 2^0 places. Write 0s in the remaining places, 2^3 and 2^2. Now, by substituting the values, we get, 1 in the 2^5 place 1 in the 2^4 place 0 in the 2^3 place 0 in the 2^2 place 1 in the 2^1 place 1 in the 2^0 place

9 Step 7 -Write the values in reverse order: Now, write the numbers to represent 51 in binary. Therefore, 110011 is 51 in binary.

10 Grouping Method:In this method, we divide the number 51 by 2. Let us see the step-by-step conversion.

11 Step 1 -Divide the given number 51 by 2. 51 / 2 = 25. Here, 25 is the quotient, and 1 is the<a>remainder</a>.

12 Step 2 -Divide the previous quotient (25) by 2. 25 / 2 = 12. Here, the quotient is 12, and the remainder is 1.

13 Step 3 -Repeat the previous step. 12 / 2 = 6. Now, the quotient is 6, and 0 is the remainder.

14 Step 4 -Repeat the previous step. 6 / 2 = 3. Now, the quotient is 3, and 0 is the remainder.

15 Step 5 -Repeat the previous step. 3 / 2 = 1. Now, the quotient is 1, and 1 is the remainder.

16 Step 6 -Repeat the previous step. 1 / 2 = 0. Here, the remainder is 1. And we stop the<a>division</a>here because the quotient is 0.

17 Step 7 -Write down the remainders from the bottom to the top. Therefore, 51 (decimal) = 110011 (binary).