Question 1

How do I convert a number between bases?

Accepted Answer

Type or paste an integer into the input field, and the tool instantly shows the value in decimal, binary, octal, and hexadecimal all at once. There are no separate buttons to press for each base, the four results update as you type.

Question 2

Can I enter a number using a prefix like 0x or 0b?

Accepted Answer

Yes. The tool recognizes the 0b prefix for binary, 0o for octal, and 0x for hexadecimal, so you can paste a value directly from code. It detects the base from the prefix and converts to all four formats.

Question 3

Can it convert decimals or negative numbers?

Accepted Answer

This tool is designed for integers, so values like 3.14 or fractional parts are not supported. Enter whole numbers, optionally with a 0b, 0o, or 0x prefix, for accurate conversion.

Question 4

Is it free and does it work offline?

Accepted Answer

Yes, it is completely free with no account or sign-up required. Since all conversion runs in your browser, it keeps working even after the page is loaded and you go offline.

Question 5

Are the numbers I enter sent to a server?

Accepted Answer

No. Every conversion happens entirely in your browser, so the numbers you type are never uploaded, stored, or tracked. Your input stays on your own device.

Base Converter

FAQ