Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal.
Binary
Octal
Decimal
Hexadecimal
About Number Base Converter
Convert integer values between Binary, Octal, Decimal and Hexadecimal. This online number base converter supports large integer values using JavaScript BigInt and performs the conversion directly in your browser.
How to use Number Base Converter
- Enter a number in the input field.
- Select the input number base.
- Click Convert.
- View the converted value in Binary, Octal, Decimal and Hexadecimal.
- Use Copy to copy any converted value.
What is a Number Base?
A number base determines how numbers are represented using a specific set of digits. Different number systems are commonly used in mathematics, programming, electronics and computer science.
Binary, Octal, Decimal and Hexadecimal
| Number System | Base | Digits | Common Use |
|---|---|---|---|
| Binary | 2 | 0–1 | Computer systems and digital electronics |
| Octal | 8 | 0–7 | Compact representation of binary values |
| Decimal | 10 | 0–9 | Everyday numbers and general calculations |
| Hexadecimal | 16 | 0–9, A–F | Programming, memory addresses and color values |
Example: Converting 255
The decimal number 255 can be represented in several number systems:
Binary
11111111
Octal
377
Decimal
255
Hexadecimal
FF
When should you use a Number Base Converter?
- Converting binary values during programming.
- Working with hexadecimal values in software development.
- Converting values used in digital electronics.
- Checking number representations while learning computer science.
- Converting large integer values between number systems.
Does this converter support large numbers?
Yes. This converter uses JavaScript BigInt for integer conversion, allowing it to work with integer values that are larger than the range supported by JavaScript's regular Number type.
Is my number uploaded to a server?
No. Number conversion is performed directly in your browser. The tool does not require a backend server to perform the conversion.