Convert Decimal 19 to Binary

(19)10 = (?)2. Decimal 19 in binary conversion provides the detailed information on what is the binary equivalent of (19)10, and the step-by-step work for how to convert the decimal (base-10) number 19 to its binary (base-2) equivalent manually.

(19)10 in binary is equal to:
19₁₀ = 10011₂

Hence,
(19)10 is equivalent to (10011)2

where,
19₁₀ is the given decimal number,
10 in 19₁₀ represents the base-10 or decimal number system,
10011₂ is the binary equivalent of the decimal 41,
2 in 10011₂ represents the base-2 or binary number system.

Important Notes: (19)10 in Binary
The below are some of the important notes to be remembered while converting the base-10 number 19 into a binary number.

The initial or first remainder while performing MOD-2 operation for 19 is a Least Significant Bit (LSB).
The last remainder while performing MOD-2 operation for 19 is a Most Significant Bit (MSB).
The remainders of MOD-2 operation for 19 should be written from MSB to LSB to form the binary equivalent for the given decimal number (19)10.

For decimal values other than 19, use this below tool:

How-to: What is (19)10 in binary?

The below step-by-step solution shows how to convert (19)10 to its equivalent binary code or number. Arranging or writing the remainders from MSB to LSB of successive MOD-2 operation for decimal 19 forms the binary equivalent of 19.

Solved Example:
What is the binary equivalent of 19?

step 1 Observe the input parameters, values and what to be found:

Input values:
Decimal Number = (41)₁₀

what to be found:
Which binary value is equal to the decimal number 19?
(19)10 = (?)2

step 2 Perform successive MOD-2 operation for decimal 19, and mark the initial remainder as LSB and the final remainder as MSB as like the below:

Successive MOD-2 Operation for 19:

19 MOD-2	19 / 2 = 9	Remainder is 1 → LSB
9 MOD-2	9 / 2 = 4	Remainder is 1
4 MOD-2	4 / 2 = 2	Remainder is 0
2 MOD-2	2 / 2 = 1	Remainder is 0
1 MOD-2	1 / 2 = 0	Remainder is 1 → MSB

step 3 Write the remainders of MOD-2 operation for 19 from MSB to LSB forms the binary equivalent for 19:
10011
19₁₀ = 10011₂

Therefore,
the binary equivalent of 19 is (10011)2