Base converter
Convert numbers between binary, octal, decimal, hexadecimal, and other bases up to 36. Supports negative values and large integers.
Binary (2)
11111111Octal (8)
377Decimal (10)
255Hexadecimal (16)
ffBase 36
73// About this tool
Translate values between number bases for debugging, teaching, or low-level work. Enter a value, choose its base, and copy the converted result.
// How to use it
- Enter the number and select its base.
- Review the converted values.
- Copy the result you need.
// Frequently asked questions
Can it handle very large numbers?
Yes. The converter uses BigInt, so large integers are not limited by JavaScript number precision.
Does it support negative numbers?
Yes. Prefix the value with a minus sign.