Decimal to Binary Converter

Convert between decimal and binary number systems

Enter a positive integer

Enter binary digits (0 and 1)

Quick Reference Table (0-15)

DecimalBinaryDecimalBinary
0000081000
1000191001
20010101010
30011111011
40100121100
50101131101
60110141110
70111151111

About Decimal and Binary Conversion

The decimal system (base 10) is the standard number system we use in everyday life, using digits 0-9. The binary system (base 2) is fundamental to computing and digital electronics, using only 0 and 1.

Converting between decimal and binary helps understand how computers process and store information. Each binary digit (bit) represents a power of 2, and combinations of bits can represent any decimal number.

This converter shows you the step-by-step process of conversion in both directions. Understanding binary is essential for computer science, programming, and digital systems.