Convert between decimal, binary, octal and hexadecimal. Free base converter.
This number base converter tool lets you convert between binary, octal, decimal, and hexadecimal number systems. It is designed for speed and accuracy, running entirely in your browser with no data sent to any server. Whether you are a student, professional, or simply need a quick answer, this calculator provides instant results with clear explanations. Enter a number in any supported base and see its equivalent in all other bases simultaneously. The converter handles binary (base 2) used in computing, octal (base 8), decimal (base 10) used in everyday life, and hexadecimal (base 16) used in programming and color codes.
Enter a number in any supported base and see its equivalent in all other bases simultaneously. The converter handles binary (base 2) used in computing, octal (base 8), decimal (base 10) used in everyday life, and hexadecimal (base 16) used in programming and color codes.
Programmers convert between hexadecimal color codes and RGB values. Computer science students learn binary and hexadecimal number systems. Network engineers work with IP addresses in binary and decimal notation. Hardware engineers debug register values displayed in hexadecimal. Embedded systems developers convert between number representations for microcontroller programming.
You might also find these calculators useful: Hash Generator · Scientific Notation Calculator · Exponent Calculator · Logarithm Calculator · Data Size Converter.
Yes, this Number Base Converter calculator is completely free with no signup, no account creation, and no usage limits. All calculations run locally in your browser, so your data stays private and results appear instantly.
This calculator uses standard mathematical formulas and internationally recognized conversion factors. Results are displayed with up to six significant digits of precision. For most everyday uses, the results are more than accurate enough.
Yes, the calculator is fully responsive and works on smartphones, tablets, and desktop computers. The interface automatically adjusts to your screen size. Touch inputs and on-screen keyboards work seamlessly.
Once the page has loaded in your browser, the calculator works without an internet connection. All computation happens locally using JavaScript. Bookmark the page for quick access anytime.
This calculator uses standard, well-established formulas that are widely accepted in education, science, and professional practice. The specific formula is explained in the "How it works" section above.