Binary to Decimal
Convert between binary and decimal numbers.
Binary
Decimal
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About Binary to Decimal
Convert binary numbers to decimal and decimal to binary. Fast, free, and easy-to-use binary/decimal converter.
How to Use
- 1
Enter binary or decimal
Type a number in either format.
- 2
Select conversion direction
Choose binary → decimal or decimal → binary.
- 3
Copy result
Copy the conversion result.
Examples
Binary to Decimal
Input:
11111111Output:
255Decimal to Binary
Input:
42Output:
101010Frequently Asked Questions
How do I convert binary to decimal?
Multiply each binary digit by 2 raised to its position power (right to left, starting from 0), then sum the results.
What is the largest binary number supported?
The tool handles binary numbers up to 64 bits (which covers JavaScript's integer range).
Can I convert decimal to binary?
Yes! Enter a decimal number and get its binary representation.