Binary Hex Decimal Converter
Convert between binary, hexadecimal, and decimal number systems
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What is Number Base Converter?
The Number Base Converter transforms numbers between binary, hexadecimal, and decimal numeral systems. You type a number in any one of the three formats and the tool instantly shows the equivalent in the other two. It validates input to ensure only valid characters are used for each base. All processing happens in the browser.
How does Number Base Converter work?
This tool uses JavaScript's parseInt and toString methods to convert between bases. Binary accepts only 0 and 1. Hexadecimal accepts 0-9 and A-F (case-insensitive). Decimal accepts 0-9. The tool converts any input to the other two formats in real time.
Key Features
- Converts between binary, hex, and decimal
- Bidirectional: type in any field
- Real-time conversion as you type
- Input validation with error messages
- Copy any value to clipboard
- Supports large numbers up to 2^53-1
- Runs in the browser with no uploads
- Quick example presets
Common Use Cases
Converting hex color codes to decimal
Convert a hex color value like FF5733 to decimal RGB values for use in code.
Working with memory addresses
Convert a hex memory address to binary for low-level debugging or assembly programming.
Learning number systems
Practice converting between binary, hex, and decimal for a computer science course.
Inspecting binary data
Convert a binary value from a logic circuit diagram to hex for easier reading.
How to Use This Tool
Enter a number
Type a value in any of the three fields: binary, hex, or decimal.
View conversions
The other two fields update instantly with the converted values.
Copy a value
Click the copy button next to the value you need.
Pro Tips
- 1
Binary uses only 0 and 1. Hex uses 0-9 and A-F.
- 2
Each hex digit represents 4 binary bits, so 0xFF is 11111111 in binary.
- 3
The tool supports numbers up to JavaScript's maximum safe integer (2^53-1).
- 4
Hex values are case-insensitive: 'a' and 'A' are treated the same.
Frequently Asked Questions
What number bases are supported?
The converter supports binary (base-2), hexadecimal (base-16), and decimal (base-10). These are the three most common bases in programming and computer science.
What is the maximum number I can convert?
The tool supports numbers up to JavaScript's maximum safe integer, which is 9,007,199,254,740,991 in decimal.
Is my input sent to a server?
No. All conversion happens in your browser using JavaScript. Nothing is transmitted.
Can I convert negative numbers?
The tool currently supports positive integers only. Negative numbers and floating-point values require different conversion approaches.
Why do programmers use hexadecimal?
Hex is more compact than binary. Each hex digit represents 4 bits, making it easier to read and write long binary numbers. It is commonly used for memory addresses, color codes, and encoded data.