Convert tools

Number Base Converter

Convert integers between bases 2 through 36, including binary, octal, decimal and hexadecimal, without precision loss.

Convert in your browser · No sign-up

Enter digits without 0x or 0b prefixes. Supports negative integers up to 1000 input digits; fractions are unsupported.

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

How to use

  1. Convert integers between bases 2 through 36, including binary, octal, decimal and hexadecimal, without precision loss.
  2. Choose the mode or options, then run the tool.
  3. Review the result, then copy or download the TXT file.

Example

255 (10) = FF (16)

Details and limitations

Enter digits without 0x or 0b prefixes. Supports negative integers up to 1000 input digits; fractions are unsupported.

Text stays in your browser; it is not sent to a conversion server.

FAQ

Number Base Converter — What are the supported inputs and limits?

Enter digits without 0x or 0b prefixes. Supports negative integers up to 1000 input digits; fractions are unsupported.

Format references

Tool page updated: