Number Base Converter

Convert values between different base representations with custom base settings.

Number Value

From Base

To Base

Decimal (Base 10):

Binary (Base 2):

101010

Hexadecimal (Base 16):

Octal (Base 8):

Base (16) Result:

Processed locally in your browser — nothing is uploaded.

How to Use

Supports custom bases from base 2 (binary) up to base 36 (using digits 0-9 and letters A-Z).

Scientific Notation Converter

Convert numbers to scientific notation (E-notation) and vice versa.

Roman Numeral Converter

Convert decimal integers to Roman numerals and decode Roman numerals to decimals.