Binary Calculator: Base 2

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Everyone
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Everyone
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About this app

Binary Calculator works with base 2 numbers made only of 0s and 1s. Calculator does arithmetic on two binary numbers, Converter changes a binary number to decimal or a decimal number to binary, and Number Bases converts a number to any base from 2 to 36 and shows two's complement for 8, 16, 32 or 64 bits.

What you get
• Calculator: add, subtract, multiply or divide two binary numbers
• Converter: binary to decimal and decimal to binary
• Number Bases: any base from 2 to 36, including octal and hexadecimal
• Two's complement for 8, 16, 32 or 64 bits

Where it helps
• Checking binary arithmetic in computer science homework
• Converting a binary value to decimal while reading low-level code
• Working out bit patterns for 8-bit or 32-bit values
• Converting between hexadecimal, octal and decimal notation

Binary numbers use only the digits 0 and 1. Division by zero is not allowed.

Made for daily use
• Light and dark theme
• 28 languages, with right-to-left layout where it belongs

Part of Calculator.io
Binary Calculator runs on the Calculator.io calculator engine. The More calculators link opens the full Calculator.io app, with 170+ tools for math, money, health and dates.
Binary math, binary-decimal conversion and bases 2 to 36 in one calculator.
Updated on
Oct 23, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, App activity and 2 others
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

First release of Binary Calculator, built on the Calculator.io engine.
• Binary arithmetic: add, subtract, multiply and divide
• Conversion between binary and decimal
• Bases from 2 to 36, with two's complement for 8, 16, 32 and 64 bits
• Light and dark theme
• 28 languages
• A More calculators link to the full Calculator.io app