Number Base Converter

Convert values between binary, decimal, octal and hexadecimal number systems with instant validation.

Enter a value, choose its source number base and the destination base, then convert and verify the resulting representation.

Processed locally where browser support allows.

How to use Number Base Converter

Enter a value, choose its source number base and the destination base, then convert and verify the resulting representation.

What the tool does

Convert values between binary, decimal, octal and hexadecimal number systems with instant validation.

Supported inputs

Value to convert and Input number system.

Actual output

The converted value in the selected destination unit or format, together with the source value for comparison.

Privacy and processing

The calculation runs locally in the browser; important decisions should use independently verified figures.

Limitations

Check the entered values, operation, units and rounding. Keep unrounded source values when the result will be used in another calculation.

Common mistakes

Choose the correct source and destination units or formats, and do not assume that conversion can restore precision or quality that is not present in the source.

Frequently asked questions

What can I use Number Base Converter for?

Convert values between binary, decimal, octal and hexadecimal number systems with instant validation.

What input does Number Base Converter accept?

Value to convert and Input number system.

What should I check after using Number Base Converter?

Check the entered values, operation, units and rounding. Keep unrounded source values when the result will be used in another calculation.

Related tasks and guides

  • Basic Calculator — Perform everyday arithmetic with a clear expression history and reusable results.
  • Scientific Calculator — Evaluate scientific calculator expressions and review the computed result in the browser.
  • Percentage Calculator — Calculate percentages, percentage increase or decrease and reverse percentages from the original and final values.
  • Ratio and Proportion Calculator — Solve proportion using a, b, c, and d (leave zero to solve), then review the result and supporting breakdown.