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Format, validate, and minify JSON without uploading your data.
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Number Base Converter
Convert values between binary, octal, decimal, and hexadecimal.
Binary11111111
Octal377
Decimal255
HexFF
🔒 Your inputs stay in your browser. UtilityKit does not store calculation data.
How it works
How to use the Number Base Converter
- Choose the source and target units, then enter the value you want to convert.
- Review the result, then adjust any input to update it instantly.
- Copy the result or open a related tool for the next step.
About this tool
What this tool does
Convert between binary, octal, decimal, and hexadecimal values. It helps with common development and data-formatting tasks without requiring a local script or command-line utility.
Common uses
When it is useful
- Inspect or transform development data
- Create test values and debugging output
- Avoid writing a one-off local script
Worked example
Example number-base conversion
Input
255 in decimal
Result
The value is 11111111 in binary and FF in hexadecimal.
FAQ
Frequently asked questions
Is the Number Base Converter free to use?
Yes. The Number Base Converter is available without registration or payment.
Does the Number Base Converter upload my data?
No. The calculation or transformation runs locally in your browser unless the page explicitly says otherwise.
How accurate is the Number Base Converter?
The tool applies the displayed rules directly to the values or content you enter.
Can I use the Number Base Converter on a phone?
Yes. UtilityKit tools are designed to work on modern desktop and mobile browsers.
Can I use the result for professional decisions?
Use the result as a convenient estimate or processing aid. For financial, medical, legal, or other high-impact decisions, verify it with a qualified professional or authoritative source.