Decimal Binary Converter is a free online tool that converts decimal numbers to binary and binary numbers back to decimal. Supports both positive and negative integers. No installation required.
The decimal system uses base 10 (digits 0-9) while the binary system uses base 2 (digits 0 and 1). Binary is the fundamental language of computers. Converting between these systems is essential for programming, digital electronics, and computer science education.
Decimal ↔ Binary Converter
Convert between decimal and binary numbers instantly.
How to Use
- Enter a decimal number and click "Decimal → Binary" to convert to binary
- Or enter a binary number and click "Binary → Decimal" to convert to decimal
- The result will appear instantly below
- Copy the output as needed
Example
Input
255
Output
11111111
FAQ
- What is binary number system?
- Binary is a base-2 number system using only 0 and 1. It is the native language of digital computers and electronic circuits.
- Is this tool free?
- Yes, it is completely free with no registration required.
- Does this tool run in the browser?
- Yes, all conversions happen locally in your browser with no data sent to a server.