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converter

Number Base Converter

Convert numbers between binary, octal, decimal, hexadecimal, and custom bases up to base 36.

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Built-in bases

Binary, octal, decimal, and hexadecimal

Type in any field to convert the same number across all four common bases.

Custom base converter

Bases 2 to 36

Step-by-step explanation

Decimal pathway
    Digit Value Position Contribution

    How to use

    How to convert numbers between binary, octal, decimal, hexadecimal, and custom bases

    1. 1 Type a value into any of the built-in base fields to update the other three common base formats automatically.
    2. 2 Use only digits that are valid for the base you are entering, such as 0 and 1 for binary or 0โ€“9 plus Aโ€“F for hexadecimal.
    3. 3 Review the custom base section when you need to convert between less common bases such as base 3, base 12, or base 36.
    4. 4 Change the From base and To base dropdowns to match the source and destination systems for your custom value.
    5. 5 Read the explanation panel to see the decimal intermediate value and the positional contribution of each digit.

    Base conversion is a core concept in programming, networking, digital electronics, and math education because the same numeric value can be represented in several numbering systems. Developers switch between binary, octal, decimal, and hexadecimal constantly when inspecting permissions, memory values, color codes, or machine-level output. A live browser converter removes the friction of doing those translations by hand.

    The custom base option makes the tool more flexible for educational exercises and niche workflows that use other radices. Showing the step-by-step decimal pathway adds context, which helps explain why the conversion works instead of only presenting the final answer. That makes the page useful not just as a calculator but also as a teaching aid for positional number systems.

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