Number Base Converter
The Number Base Converter turns a whole number into binary, octal, decimal, and hexadecimal at the same time. Type in any field and the rest update instantly — perfect for programming, digital electronics, networking, and computer-science homework.
Type a whole number in any field — the others convert instantly.
Converts whole numbers between binary, octal, decimal, and hexadecimal. Everything runs in your browser — nothing is uploaded. Values are limited to safe integers (up to 9,007,199,254,740,991).
How This Tool Works
Type a whole number into any field — binary, octal, decimal, or hexadecimal — and the other three convert instantly. Copy any result with one click.
Formula & Method
Each value is read as an integer in its own base (binary is base 2, octal base 8, decimal base 10, hexadecimal base 16) and re-expressed in the others by repeatedly dividing by the target base and reading the remainders.
Example Calculation
Enter 42 in the decimal field and you immediately see 101010 in binary, 52 in octal, and 2A in hexadecimal.
Frequently Asked Questions
How do I convert binary to decimal?+
Type your binary number (only 0s and 1s) into the Binary field — the Decimal field updates instantly with the converted value.
What number sizes are supported?+
Any non-negative whole number up to 9,007,199,254,740,991 (the largest integer JavaScript can represent exactly), which covers virtually all everyday and programming needs.
Does it handle decimals or negative numbers?+
This converter works with non-negative whole numbers. Fractions and negative values aren’t supported.
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<a href="https://everyfix.net/tools/number-base-converter/">Number Base Converter</a> by <a href="https://everyfix.net">EveryFix</a>Related Tools
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