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Binary to Decimal Converter

Convert binary numbers to their decimal equivalents with step-by-step calculation.

Binary Input

Understanding Binary to Decimal Conversion

The Binary to Decimal Converter is a tool that translates numbers from the binary system (base-2) to the decimal system (base-10), which is the number system we use in everyday life. This conversion is fundamental in computer science and digital electronics.


⚙️ How to Use the Converter

  1. Enter Binary Number: Type the binary number (a sequence of 0s and 1s) into the input field.
  2. Click "Convert to Decimal": The calculator will process the binary string.
  3. View Result: The decimal equivalent will be displayed, along with a step-by-step visual calculation showing how each binary digit contributes to the decimal value.

🔢 The Conversion Process Explained

In the binary system, each digit's position represents a power of 2, starting from 20 for the rightmost digit. To convert a binary number to decimal:

  1. Starting from the rightmost digit of the binary number (which is the 20 position).
  2. Multiply each binary digit by 2 raised to the power of its position (where the rightmost position is 0, the next is 1, and so on).
  3. Sum up all these products to get the decimal equivalent.

Example: Convert binary 1011 to decimal.

  • 1 × 23 (for the leftmost '1') = 1 × 8 = 8
  • 0 × 22 (for the '0') = 0 × 4 = 0
  • 1 × 21 (for the next '1') = 1 × 2 = 2
  • 1 × 20 (for the rightmost '1') = 1 × 1 = 1

Sum = 8 + 0 + 2 + 1 = 11. So, 10112 = 1110.

The calculator provides a "Visual Calculation" section that breaks this down clearly for your entered binary number.


💡 Common Use Cases

  • Computer Science Education: Understanding how computers store and process numbers.
  • Programming: Working with low-level data representations, bitwise operations, or network protocols.
  • Digital Electronics: Analyzing digital circuits and signals.
  • Networking: Interpreting IP addresses or subnet masks that might be represented or understood in binary.

✨ Further Explanation

The binary system is a base-2 numeral system, meaning it only uses two symbols: 0 and 1. Each digit in a binary number is called a "bit." Computers operate using binary logic because it's easy to represent these two states (0 and 1) with electrical signals (off/on or low/high voltage).

When converting from binary to decimal, you are essentially expanding the binary number in terms of powers of 2. Each position in a binary number has a weight that is a power of 2. For example, the binary number dndn-1...d1d0 can be converted to decimal using the formula:
(dn × 2n) + (dn-1 × 2n-1) + ... + (d1 × 21) + (d0 × 20)

This calculator automates this process, providing a quick and error-free conversion, along with a visual breakdown to help understand the calculation.

Related Keywords

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base 2 to base 10