Convert numbers between binary, decimal, hexadecimal, and octal.
Binary
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Decimal
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Hexadecimal
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Octal
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About this tool
Enter a decimal integer to see its equivalent in binary (base 2), hexadecimal (base 16), and octal (base 8). Supports non-negative integers. All conversion happens instantly in your browser.
Runs in your browser — nothing is uploaded; your input never leaves your device. How it works
Quick answer
Enter a decimal number and Tabreon instantly shows its binary, hexadecimal, and octal equivalents side by side.
Why use Tabreon for this?
All three conversions (binary, hex, octal) appear at once from a single decimal input, computed instantly in your browser.
No account, no limit on how many conversions you can run.
Simple, focused output with no extraneous formatting to parse.
How to convert a number between bases
1Enter a decimal number. Type a non-negative integer (e.g. 255) into the input box.
2Review the conversions. Binary, hexadecimal, and octal equivalents update instantly.
What are number bases?
A number base (or radix) is the count of digits a numbering system uses before it carries over to the next place value. Decimal (base 10) is the everyday system using digits 0–9. Binary (base 2) uses only 0 and 1 and is how computers represent data at the hardware level. Hexadecimal (base 16) uses 0–9 and a–f and is a compact way to represent binary data (common in color codes and memory addresses). Octal (base 8) uses 0–7 and appears in Unix file permission notation.
How Tabreon handles your data
Conversion runs in your browser using native JavaScript number formatting — nothing you enter is sent to a server.
Key features
Converts decimal input to binary, hex, and octal simultaneously
Instant results as you type
Handles large integers within JavaScript's safe integer range
Common use cases
Converting a decimal color value to its hexadecimal representation
Translating a Unix file permission number (octal) for reference
Checking the binary representation of a value for a bitwise operation
Common mistakes & limitations
This tool converts from decimal only — enter a decimal number to see it in the other bases; it does not accept binary, hex, or octal as input.
Accepts non-negative integers only — negative numbers and decimals return no result rather than a converted value.
Very large numbers beyond JavaScript's safe integer range (2^53 - 1) may lose precision.
Frequently asked questions
Not directly — the input field is always read as decimal. Convert your binary or hex value to decimal first, then enter it here to see it in the other bases.
No, currently only non-negative integers produce a result.
Practically, yes — results stay accurate up to JavaScript's safe integer limit (2^53 - 1). Beyond that, the conversion may lose precision.