Number Base Converter
Convert numbers between decimal, hexadecimal, octal, and binary. Supports arbitrarily large integers via BigInt.
Number Base Converter
Convert integers between Decimal, Hexadecimal, Octal, and Binary number systems instantly. Supports arbitrarily large integers via BigInt.
Input
FAQ
What is hexadecimal used for?▼
Hexadecimal (base 16) is widely used in programming for memory addresses, color codes (#FF6347), byte values, and binary data representation because it compactly represents 4 bits per digit.
Does this support negative numbers?▼
Currently this tool converts unsigned positive integers. Negative number representation (two's complement) varies by bit width and is outside this tool's scope.
How large a number can it convert?▼
The converter uses JavaScript BigInt, so it can handle arbitrarily large integers without precision loss.
Frequently Asked Questions
What is hexadecimal?
Hexadecimal (base 16) uses digits 0–9 and letters A–F. It is widely used in programming for memory addresses, CSS colors, and byte values because it compactly represents binary data (1 hex digit = 4 bits).
What is binary?
Binary (base 2) uses only 0 and 1, representing the off/on states of transistors. It is the fundamental number system of all digital computers.
What is octal?
Octal (base 8) uses digits 0–7. It was historically used in Unix file permissions (e.g., chmod 755) and some programming contexts where 3-bit groupings are convenient.