# Decimal to Octal Converter

decimal to octal converter allows you to convert numbers between the decimal and octal number systems.

decimal to octal

Decimal to octal

## Decimal and octal number systems

In the decimal number system, also known as the base-10 system, we use 10 digits (0, 1, 2, 3, 4, 5, 6, 7, 8, and 9) to represent numbers. This system is used in everyday life because it is the most convenient way for humans to represent numbers.

The octal number system, also known as the base-8 system, is a numeric system that uses eight digits (0, 1, 2, 3, 4, 5, 6, and 7) to represent numbers. This system is used less commonly than the decimal system, but it is sometimes used in computing because it is a simple way to represent binary numbers.

To convert a number from the decimal system to the octal system, you can divide the number by 8 repeatedly and keep track of the remainders. For example, to convert the decimal number 100 to octal, we can divide 100 by 8 and get a quotient of 12 with a remainder of 4. We can then divide 12 by 8 and get a quotient of 1 with a remainder of 4. Finally, we can divide 1 by 8 and get a quotient of 0 with a remainder of 1. This gives us the octal representation of 100, which is 144.

To convert a number from the octal system to the decimal system, you can multiply each digit in the octal number by 8 raised to the power of its position, starting from the rightmost digit. For example, to convert the octal number 144 to decimal, we can start with the rightmost digit (4) and multiply it by 8 raised to the power of 0 (which is 1), giving us 4. We can then move to the next digit (4) and multiply it by 8 raised to the power of 1 (which is 8), giving us 32. Finally, we can multiply the leftmost digit (1) by 8 raised to the power of 2 (which is 64), giving us 64. Adding these three values together gives us the decimal representation of 144, which is 100.

## How to convert decimal to octal?

To convert a decimal number to octal, you can divide the number by 8 repeatedly and keep track of the remainders. Here's an example of how to do this:

1. Start with the decimal number you want to convert. For example, let's say we want to convert the decimal number 100 to octal.
2. Divide the decimal number by 8. In this case, 100 divided by 8 is 12 with a remainder of 4. Write down the remainder (4) and keep track of the quotient (12).
3. Divide the quotient (12) by 8. In this case, 12 divided by 8 is 1 with a remainder of 4. Write down the remainder (4) and keep track of the quotient (1).
4. Divide the quotient (1) by 8. In this case, 1 divided by 8 is 0 with a remainder of 1. Write down the remainder (1).
5. The remainders that you have written down (4, 4, and 1) represent the digits of the octal number, starting from the rightmost digit. In this case, the octal representation of 100 is 144.

Here's another example:

1. Start with the decimal number you want to convert. For example, let's say we want to convert the decimal number 128 to octal.
2. Divide the decimal number by 8. In this case, 128 divided by 8 is 16 with a remainder of 0. Write down the remainder (0) and keep track of the quotient (16).
3. Divide the quotient (16) by 8. In this case, 16 divided by 8 is 2 with a remainder of 0. Write down the remainder (0) and keep track of the quotient (2).
4. Divide the quotient (2) by 8. In this case, 2 divided by 8 is 0 with a remainder of 2. Write down the remainder (2).
5. The remainders that you have written down (0, 0, and 2) represent the digits of the octal number, starting from the rightmost digit. In this case, the octal representation of 128 is 200.

## How to convert octal to decimal?

To convert an octal number to decimal, you can multiply each digit in the octal number by 8 raised to the power of its position, starting from the rightmost digit. Here's an example of how to do this:

1. Start with the octal number you want to convert. For example, let's say we want to convert the octal number 144 to decimal.
2. Multiply the rightmost digit (4) by 8 raised to the power of 0 (which is 1). In this case, 4 * 1 = 4.
3. Multiply the next digit (4) by 8 raised to the power of 1 (which is 8). In this case, 4 * 8 = 32.
4. Multiply the leftmost digit (1) by 8 raised to the power of 2 (which is 64). In this case, 1 * 64 = 64.
5. Add the results from step 2, 3, and 4. In this case, 4 + 32 + 64 = 100.

The result is the decimal representation of the octal number. In this case, the decimal representation of 144 is 100.

Here's another example:

1. Start with the octal number you want to convert. For example, let's say we want to convert the octal number 200 to decimal.
2. Multiply the rightmost digit (0) by 8 raised to the power of 0 (which is 1). In this case, 0 * 1 = 0.
3. Multiply the next digit (0) by 8 raised to the power of 1 (which is 8). In this case, 0 * 8 = 0.
4. Multiply the leftmost digit (2) by 8 raised to the power of 2 (which is 64). In this case, 2 * 64 = 128.
5. Add the results from step 2, 3, and 4. In this case, 0 + 0 + 128 = 128.

The result is the decimal representation of the octal number. In this case, the decimal representation of 200 is 128.

## How to use the decimal to octal converter?

There are several ways to use a decimal to octal converter. One way is to use an online converter tool. Here's an example of how to use an online converter:

1. Go to a website that offers a decimal to octal converter tool.
2. Enter the decimal number you want to convert into the input field provided.
3. Click the "Convert" button to see the octal representation of the decimal number.

You can also use a calculator or a computer program to convert decimal to octal. Here's an example of how to use a calculator:

1. Press the "Mode" button on your calculator to access the mode settings.
2. Select the "Oct" setting to set the calculator to octal mode.
3. Enter the decimal number you want to convert into the calculator.
4. Press the "Enter" or "=" button to see the octal representation of the decimal number.

## What is the base of octal number system?

The octal number system, also known as the base-8 system, is a numeric system that uses eight digits (0, 1, 2, 3, 4, 5, 6, and 7) to represent numbers. The base of the octal number system is therefore 8.

In the octal system, each digit has a value that is a multiple of 8 raised to the power of its position, starting from the rightmost digit. For example, in the octal number 124, the rightmost digit (4) has a value of 4 * 8^0 = 4, the next digit (2) has a value of 2 * 8^1 = 16, and the leftmost digit (1) has a value of 1 * 8^2 = 64. The total value of the octal number 124 is therefore 4 + 16 + 64 = 84.

The octal system is used less commonly than the decimal system, but it is sometimes used in computing because it is a simple way to represent binary numbers. To convert a number from the octal system to the decimal system, you can multiply each digit in the octal number by 8 raised to the power of its position, starting from the rightmost digit. To convert a number from the decimal system to the octal system, you can divide the number by 8 repeatedly and keep track of the remainders.

## What are the applications of octal number system?

The octal number system, also known as the base-8 system, is a numeric system that uses eight digits (0, 1, 2, 3, 4, 5, 6, and 7) to represent numbers. The octal system is used less commonly than the decimal system, which is the most commonly used number system in everyday life. However, the octal system has some specific applications in computing and other fields.

One application of the octal number system is in the representation of binary numbers. In computers, all data is stored and processed using binary numbers, which are made up of only two digits (0 and 1). However, binary numbers can be long and difficult for humans to read and work with. The octal system provides a convenient way to represent binary numbers using a smaller set of digits (eight digits instead of two). For example, the binary number 1110101 can be represented as the octal number 165.

Another application of the octal system is in the representation of file permissions in the Unix and Linux operating systems. In these systems, file permissions are represented using a combination of octal digits and letters. For example, the octal number 644 represents read and write permissions for the owner of a file, and read-only permissions for others.

The octal system is also used in some programming languages, such as Python, to represent numbers in octal notation. In Python, you can use the prefix "0o" to indicate an octal number, like this:

``octal_number = 0o144  # equivalent to decimal number 100``

Overall, the octal system has some specific applications in computing and other fields, but it is used less commonly than the decimal system in everyday life.

## How do I convert 18 into octal number system?

To convert the decimal number 18 to octal, you can divide 18 by 8 repeatedly and keep track of the remainders. Here's how to do this:

1. Divide 18 by 8. In this case, 18 divided by 8 is 2 with a remainder of 2. Write down the remainder (2) and keep track of the quotient (2).
2. Divide the quotient (2) by 8. In this case, 2 divided by 8 is 0 with a remainder of 2. Write down the remainder (2).
3. The remainders that you have written down (2 and 2) represent the digits of the octal number, starting from the rightmost digit. In this case, the octal representation of 18 is 22.

You can also use a calculator or a computer program to convert decimal to octal. Here's an example of how to use a calculator:

1. Press the "Mode" button on your calculator to access the mode settings.
2. Select the "Oct" setting to set the calculator to octal mode.
3. Enter the decimal number you want to convert into the calculator (in this case, 18).
4. Press the "Enter" or "=" button to see the octal representation of the decimal number

## What is the octal equivalent of decimal number 8?

The octal equivalent of the decimal number 8 is 10.

To convert a decimal number to octal, you can divide the number by 8 repeatedly and keep track of the remainders. Here's how to do this:

1. Divide the decimal number by 8. In this case, 8 divided by 8 is 1 with a remainder of 0. Write down the remainder (0) and keep track of the quotient (1).
2. Divide the quotient (1) by 8. In this case, 1 divided by 8 is 0 with a remainder of 1. Write down the remainder (1).
3. The remainders that you have written down (0 and 1) represent the digits of the octal number, starting from the rightmost digit. In this case, the octal representation of 8 is 10.

You can also use a calculator or a computer program to convert decimal to octal. Here's an example of how to use a calculator:

1. Press the "Mode" button on your calculator to access the mode settings.
2. Select the "Oct" setting to set the calculator to octal mode.
3. Enter the decimal number you want to convert into the calculator (in this case, 8).
4. Press the "Enter" or "=" button to see the octal representation of the decimal number.