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Alona Tool – Free Online Tools

Number Base Converter

Runs in Your Browser

Convert a whole number between binary, octal, decimal, hexadecimal and base 36.

Browser-based: this tool works on your device and does not send your input to an Alona Tool server. See the Privacy Policy for details.
Fast Processing

Loading Number Base Converter… This tool is an interactive page and needs JavaScript enabled in your browser.

Example Usage & Test Cases

Decimal 255
Input Scenario:
255, input base 10
Generated Result:
Binary 11111111, octal 377, hex FF, base 36 73

How It Works

1

Enter the value.

2

Choose its input base (10, 2, 8, 16 or 36).

3

Read the same number in every base and copy the one you need.

Frequently Asked Questions

This tool is for whole numbers only.

Good to Know

Common uses

  • Checking binary and hex values while programming
  • Converting memory addresses or color values

Limitations and notes

  • Whole, non-negative numbers only; there is no fraction or minus-sign support.
  • Prefixes such as 0x, 0b and 0o and spaces or underscores in the input are ignored.

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Free Online Number Base Converter

Enter a value, choose the base it is written in, and see it in all five bases at once. Hex and base 36 digits are shown in upper case.

Key Highlights:

  • Free to use, no signup
  • Instant results
  • Processed in your browser
  • Works on mobile and desktop