Numbers Converter

This online Numbers Converter helps you quickly and easily convert between different numeral systems such as Binary (base-2), Octal (base-8), Decimal (base-10), and Hexadecimal (base-16). It delivers instant and accurate results, making it useful for students, programmers, and anyone working with number bases.

Numbers Systems Converter - Online Calculator

Commonly Used

Binary
Octal
Decimal
Hexadecimal
Base-2
Base-3
Base-4
Base-5
Base-6
Base-7
Base-8
Base-9
Base-10
Base-11
Base-12
Base-13
Base-14
Base-15
Base-16
Base-17

Less Common

Base-18
Base-19
Base-20
Base-21
Base-22
Base-23
Base-24
Base-25
Base-26
Base-27
Base-28
Base-29
Base-30
Base-31
Base-32
Base-33
Base-34
Base-35
Base-36
Keyboard
Input size
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FAQs

What is a number system?

A number system is a way of representing numbers using a set of symbols and rules. Common systems include binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16).

Why are there different number systems?

Different systems serve different purposes. Decimal is used in everyday life, binary is fundamental in computers, octal and hexadecimal are often used in programming and digital electronics because they simplify the representation of binary data.

What is the difference between binary and decimal?

Binary (base 2) uses only two digits, 0 and 1, while decimal (base 10) uses ten digits, from 0 to 9. Computers process information in binary because it maps directly to on/off electrical states.

Why is hexadecimal commonly used in computing?

Hexadecimal (base 16) makes it easier to read and represent large binary numbers. For example, the binary number 11111111 becomes simply FF in hexadecimal.

AC789←
C456=
123
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