Binary, Hex & Decimal Converter: How It Works and How to Use It
Convert numbers between binary, decimal, hexadecimal, and octal instantly.
Like every tool on UltimateTools, it runs instantly in your browser, updates as you type, and doesn't require an account or sign-up to use.
What it calculates
Convert between binary, decimal, hex, and octal.
Whether you think of it as a "binary converter" tool, a "hex to decimal or binary to decimal converter" tool, or simply the Binary, Hex & Decimal Converter, this page covers the same calculation.
You can find it at any time on the Binary, Hex & Decimal Converter page, where the calculator sits above a full explanation of the method it uses.
Tips for an accurate result
Break a multi-step problem into the smaller calculations it's made of, and check each one rather than trusting a single combined result blindly.
Write down what you expect the answer to roughly be before you calculate — it makes it much easier to catch a typo in your inputs.
For anything with real consequences (a grade, a budget, a measurement), verify the result by hand on at least one simple case.
Small rounding differences between two methods are normal — they don't usually mean either one is wrong.
Related tools worth trying
If you found the Binary, Hex & Decimal Converter useful, Percentage Calculator, Fraction Calculator, Average Calculator cover closely related ground and are worth a look next.