Developer Utilities

Number Base Converter

Translate an integer across common bases used in programming and computer science.

Converted values
Your result will appear here.
Processed locally in this browser. Your input is not sent to DevKitly.

What is Base Converter?

Enter a decimal number or a prefixed value (0x for hex, 0b for binary, 0o for octal). DevKitly uses BigInt, so large values convert exactly without floating-point rounding.

How to use Base Converter

  1. Paste your input into the editor above, or select Sample to load an example.
  2. Select Convert number. If the input cannot be processed, a message explains what to fix.
  3. Use Copy or Download to take the result with you, and Clear to start again.

Example

Input

0xFF

Output

Binary: 11111111
Octal: 377
Decimal: 255
Hexadecimal: FF

Practical use cases

  • Inspect bit values
  • Convert color or protocol values
  • Study number systems

Common problems

  • Including decimal points
  • Using invalid digits for a base
  • Exceeding safe integer precision

Frequently asked questions

Is Number Base Converter free to use?

Yes. Number Base Converter is free and does not require an account.

Does my input leave the browser?

No. This tool performs its processing locally in your browser and does not need to upload your input.