Number Base Converter
Convert between binary, octal, decimal, and hexadecimal at once
도구를 불러오는 중…
🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
Enter one value and this tool converts it into binary, octal, decimal, and hexadecimal simultaneously. It's useful for developers and students working with bitwise operations, color codes, and memory addresses.
How to use
- Select the base of the value you'll enter (2, 8, 10, or 16).
- Enter a value that matches that base.
- Check the results for the other three bases shown below.
- Use the 'Copy' button next to the value you need to grab the result.
FAQ
- Are very large numbers converted accurately?
- Yes. It uses arbitrary-precision (BigInt) arithmetic, so even values beyond the normal integer limit are converted precisely without rounding errors.
- What happens if I enter an invalid character?
- If a character not allowed in the selected base is entered, it shows an error message and won't produce a wrong result. For negative numbers, just add a '-' in front.
- Is my input sent to a server?
- No. All conversions are calculated in your browser, and the numbers you enter are never sent to or stored on a server.