- Enter the Binary to Decimal Converter input in the field on the page.
- Click "Convert" to run the tool in your browser.
- Read the result below the form and copy it if you need it in another app.
Binary to Decimal Converter
Convert binary numbers (base-2) to decimal numbers (base-10) with this simple online tool.
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How to Use This Tool
Learn More About Binary to Decimal Converter
Binary and Decimal Number Systems
The binary number system is a base-2 system, using only two digits: 0 and 1. Each position in a binary number represents a power of 2. The decimal number system is a base-10 system, using digits from 0 to 9.
Example
Binary: 1010
Decimal: (1 2^3) + (0 2^2) + (1 2^1) + (0 2^0) = 8 + 0 + 2 + 0 = 10
About
Convert binary numbers (base-2) to decimal numbers (base-10) with this simple online tool. Each binary digit represents a power of 2, so 1010 equals 8+0+2+0 = 10 in decimal. Just enter a binary string of 0s and 1s, and the converter will instantly display its decimal equivalent. This tool handles arbitrarily long binary strings and is essential for reverse-engineering binary data, debugging bit manipulation code, or learning computer arithmetic.
Examples
Valid binary
Binary number
Input
101010
Output
42
Zero
Binary number
Input
0
Output
0
Use Cases
- Computer science education and learning binary number systems
- Software development and debugging
- Digital electronics projects
- Understanding data representation in computers