Base Converter
Professional number base converter supporting binary, hexadecimal, decimal & octal. Instant conversion with accuracy. Free online tool with no signup required.
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What is Base Converter?
A number base converter transforms numbers between different numeral systems: binary (base-2), octal (base-8), decimal (base-10), and hexadecimal (base-16). Essential for programmers working with low-level data representation.
Key Benefits
- Instant conversion
- Multiple base support
- Binary visualization
- Copy-ready output
Common Use Cases
- •Programming
- •Computer science education
- •Color code conversion
- •Debug analysis
How to Convert Number Bases
- Enter a number: Type a number in any base (binary, decimal, hex, or octal).
- Select input base: Choose the base of your input number.
- View all conversions: See the number converted to all other bases instantly.
- Copy results: Click to copy any conversion result to use elsewhere.
Key Features
- Convert between binary, octal, decimal, hexadecimal
- Support for base 2 to base 36
- Large number support
- Real-time conversion
- Copy any result with one click
- Grouped digit display for readability
Frequently Asked Questions
What are number bases?
Number bases determine how many unique digits a system uses. Binary (base-2) uses 0-1, octal (base-8) uses 0-7, decimal (base-10) uses 0-9, hexadecimal (base-16) uses 0-9 and A-F.
Why do programmers use hexadecimal?
Hex is compact and maps directly to binary (4 bits = 1 hex digit). It is used for colors (#FF0000), memory addresses, and byte representations.
How do I convert binary to decimal?
Each binary digit position represents a power of 2. Add them up: 1011 = 8+0+2+1 = 11. Our converter does this instantly.
What is octal used for?
Octal is used in Unix file permissions (chmod 755), older computing systems, and some assembly languages. It groups 3 binary bits per octal digit.