Binary to Decimal Converter - Fast and Easy Conversion

Enter a binary number (using only 0s and 1s) to convert it to decimal format.

How Binary to Decimal Conversion Works:

Each binary digit represents a power of 2, starting from 2⁰ on the right. To convert, multiply each digit by its corresponding power of 2 and sum the results.

Example: 1011₂ = (1×2³) + (0×2²) + (1×2¹) + (1×2⁰) = 8 + 0 + 2 + 1 = 11₁₀

What is Binary to Decimal Conversion?

Binary to decimal conversion turns a base two number into base ten. Binary uses only 0 and 1. Start on the right with 2^0. Then move left to 2^1. Next comes 2^2. Multiply each digit by its weight, then add the results.

Example. 1011 equals 1x2^3 plus 0x2^2 plus 1x2^1 plus 1x2^0. The total equals 11 in decimal.

How This Tool Works

Type a binary number into the field. The tool checks your entry for only 0s and 1s. An empty box prompts a message to enter a binary number. Use up to 53 digits for accurate conversion. The converter uses base two parsing built into JavaScript. You see the decimal result at once.

Input and controls

Output explained

Limits and notes

Step-by-Step Guide

  1. Enter a binary number in the input box using only 0 and 1.
  2. Click Convert or press Enter to run the conversion.
  3. Read the Decimal line for the result in base ten.
  4. Check the Binary equals Decimal line to confirm the conversion.
  5. For 12 digits or fewer, review the Calculation line to see the math.

Benefits of Using Our Binary to Decimal Tool

This tool makes binary to decimal quick and clear. It checks your input and prevents mistakes. You get clean results without extra steps.

The math view helps you learn. Short inputs show the exact 2^exponents used. That makes study and review easier.

Here are common use cases you can try today.

Enter your binary number and run the conversion. You get a clear decimal output, plus a quick check of the math for shorter inputs. Simple, fast, and accurate for everyday work with binary to decimal.