Binary to Decimal — Practice

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About this interactive

What you're seeing: a tool that converts binary numbers to their decimal equivalent, one place value at a time. Why it matters: every byte your computer reads, stores, and sends is binary underneath — this is the exact conversion happening in computer memory, networking, and data storage. How to use it: you'll be given a binary value and asked to convert it to decimal yourself, with immediate feedback on whether your answer is correct.

What you'll learn

Convert a binary value to its decimal equivalent using place value

Aligned to

CompTIA Tech+

1.2 Identify notational systems.

Key terms

Binary: The base-2 number system that uses only the digits 0 and 1; the native language of digital computers, which store and process data as electrical on/off states.
Decimal: The base-10 number system using digits 0–9; the standard system used in everyday counting and arithmetic, and the most common format for presenting numeric output to humans.
Bit: Short for binary digit, the smallest unit of data in computing, holding a single value of 0 or 1; all digital information is ultimately composed of bits.
Byte: A group of 8 bits; the standard unit for representing a single character or small value in computing, and the building block for larger storage measurements such as kilobytes and gigabytes.
Place Value: The weight assigned to a digit based on its position within a number; in binary, each position represents a successive power of 2 (1, 2, 4, 8, …), making position the key to decoding binary values.

Topics

Binary Decimal Number Systems Data Representation

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