# Binary to Decimal Converter

### Enter a Binary Number

Decimal number:

21

Binary to Decimal Conversion

(10101)2 = (21)10

Please enter all the details correctly.

## 1. How to Use a Binary to Decimal Converter

A binary to decimal converter is a tool that allows you to convert a binary number into its equivalent decimal form.

There are a few different ways to use this type of converter, but the most common is to enter the binary number into the input field and then click the “convert” button. The converted decimal number will then be displayed in the output field.

## 2. Why You Would Need to Convert Binary to Decimal

There are a few different reasons why you might need to convert a binary number into its decimal equivalent. One reason may be for school or work, as some assignments or projects require numbers to be converted from one form to another.

Another reason may be personal, such as if you’re trying to understand how binary numbers work and want to see what they look like in their decimal form.

## 3. The Process of Converting Binary to Decimal

The process of converting a binary number into its decimal equivalent is actually quite simple. It just requires understanding how place value works in both binary and decimal systems.

In the binary system, each digit is worth double the value of the previous digit (just like in the decimal system). So, if we have a binary number like 101, we can simply multiply each digit by its place value and add them all together to get the decimal equivalent (in this case, 5).

## 4. Advantages of Using an Online Converter

There are a few advantages to using an online converter when you need to convert a binary number into its decimal equivalent. One advantage is that it’s quick and easy to use.

You don’t need to download any software or do any complex calculations; you can simply enter the binary number and get the answer in seconds. Additionally, many online converters are free to use, so you don’t need to worry about spending any money on this type of conversion tool.

## 5. Conclusion

Overall, using an online converter is a quick and easy way to convert a binary number into its decimal equivalent. However, it’s important to make sure that you use a reliable and accurate converter tool, as not all online converters are created equal.

Additionally, some online converters may require you to provide personal information before you can use them, which may not be ideal if you’re just looking for a quick solution.