Number Conversion6 options compared

Base converter

Converts numbers between various bases, including binary, ternary, octal, decimal, and hexadecimal systems. Users enter a numerical value into any single input field, and the tool instantly displays the corresponding equivalent values in all other selected formats simultaneously. This multi-field converter provides quick cross-referencing across these distinct number systems, making it an...

Editors’ Top PickBased on community votes
Other OptionsRanked by votes
  1. Screenshot of Inch Calculator
    02
    Inch Calculator
    inchcalculator.com

    This binary calculator includes base conversion between binary, decimal, and hexadecimal as part of its converter mod...

    Open siteView details
  4. Screenshot of Calculator.net
    05
    Calculator.net
    calculator.net

    The binary calculator includes conversion between binary and decimal and supports related number-system operations. I...

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  5. Screenshot of Convertworld
    06
    Convertworld
    convertworld.com

    Convertworld’s numerals converter supports positional systems including binary, decimal, hexadecimal, and several oth...

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Side by side

Base converter options compared

ToolBest forStrengthsLimitations
OnlineConversion.com
onlineconversion.com
Quick multi-base cross-reference
  • Direct multi-field converter
  • Covers binary, ternary, octal, decimal, hexadecimal
  • No arithmetic functions
  • Basic interface
Inch Calculator
inchcalculator.com
Binary arithmetic and conversion
  • Supports add, subtract, multiply, divide
  • Shows decimal and hex results alongside binary
  • Only binary, decimal, hexadecimal supported
  • Arithmetic focus may overwhelm simple conversion needs
RapidTables
rapidtables.com
Wide base range and calculation steps
  • Supports bases 2 through 36
  • Shows conversion steps for learning
  • Handles large or complex numbers
  • Interface lists many bases that may be unnecessary
  • Fewer visual output fields compared to dedicated converters
UnitConverters.net
unitconverters.net
Simple binary-decimal-hex conversion
  • Quick browser-based conversion
  • No account signup required
  • Covers base-2 through base-36
  • Fewer output fields displayed simultaneously
  • Basic design without extra features
Calculator.net
calculator.net
Educational binary math tasks
  • Straightforward binary-to-decimal and vice versa
  • Free, no subscription needed
  • Includes related number-system operations
  • Only binary and decimal conversion
  • No support for octal or hexadecimal output fields
Convertworld
convertworld.com
Positional numeral system exploration
  • Supports binary, decimal, hexadecimal and several other bases
  • Interactive page shows cross-base outputs from single input
  • Free without mandatory paid plans
  • Limited excerpt shows limited functionality
  • Fewer output fields compared to dedicated multi-field converters

Buyer's guide

How to choose a base converter

When picking a base converter, first decide which number systems you actually need — if you only work with binary, decimal, and hexadecimal, a focused tool like Inch Calculator or Calculator.net will serve you fastest. If you regularly convert between five or more bases (including ternary, octal, etc.), choose a multi-field converter like OnlineConversion.com or UnitConverters.net so you see all equivalents at once without manual switching. Second, consider whether you need step-by-step explanations or just the final values; RapidTables provides conversion steps useful for learning, while OnlineConversion.com prioritizes instant results. Finally, check the interface layout: some tools display all output fields simultaneously, others require you to swap directions or click convert for each new input.

Questions

Base converter FAQ

Can these tools convert between any two bases, or only specific ones?
Most tools support common bases like binary (2), octal (8), decimal (10), and hexadecimal (16), but coverage varies. RapidTables and UnitConverters.net extend support up to base-36, while OnlineConversion.com and Inch Calculator focus on the standard five systems. Always check the tool’s listed base range before relying it for unusual bases.
Do any of these tools perform arithmetic operations like addition or multiplication on converted numbers?
Only Inch Calculator explicitly includes arithmetic functions (add, subtract, multiply, divide) alongside its conversion mode. The other tools in this group are designed for conversion only and will not calculate results of operations on the numbers you enter.
Is there a difference in accuracy or number-size limits between these converters?
The material does not specify accuracy limits or maximum number sizes for any of the tools. All describe automatic calculation of equivalents, but if you are working with extremely large integers or need guaranteed precision, testing a sample value in your chosen tool is recommended.
Do I need to install anything or create an account to use these base converters?
All listed tools are free to use in a web browser without mandatory account signup. UnitConverters.net and Calculator.net specifically note no signup is required, and the others are publicly accessible sites that load conversion pages directly.
Which tool is best for learning how bases work rather than just getting a quick answer?
RapidTables is the strongest choice for learning because it displays conversion steps — both the divide-by-base method for integer parts and the multiplication method for decimal-to-base conversion — helping users understand the process behind the result.
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