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Convert between binary, octal, decimal, and hexadecimal. Instantly convert number systems with auto-detection and live results.
Enter a number in the input field. Use prefixes like 0b (binary), 0o (octal), or 0x (hexadecimal). No prefix assumes decimal.
The conversion results are displayed in real-time for binary, octal, decimal, and hexadecimal.
Use the copy buttons to copy individual results or all results at once.
Number Base Converter is an online tool that converts between different number systems (bases). It supports real-time conversion between binary (base-2), octal (base-8), decimal (base-10), and hexadecimal (base-16). Use prefixes like 0b, 0o, 0x for automatic base detection to convert quickly. Useful for programming, networking, and embedded development.
Unsigned 32-bit integers from 0 to 4,294,967,295. Negative numbers and decimal fractions are not supported.
These are common notations in programming languages. 0b indicates binary, 0o indicates octal, and 0x indicates hexadecimal. Decimal numbers have no prefix.
A feature that separates digits for easier reading. Binary is grouped by 4 digits (0000 1111), others by 3 digits (4,294,967,295). Makes large numbers easier to read.
Either is acceptable, but CSS/HTML typically uses lowercase, while memory addresses often use uppercase. Match your team's conventions. This tool can output in either format.
No, all processing happens entirely in your browser. Your input data is never sent to any server.