Number Base Converter Community
Questions, answers and tips from people who use the Number Base Converter. Binary, octal, decimal, hex & any base 2–36.
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This page shows only real posts from real people, so it starts empty. The guide below has the questions people most often have about the Number Base Converter. Pick one to start a thread, or write your own.
From the tool guide: common questions about Number Base Converter
The items below are not posts by community members. They come from the written guide for this tool and are here to get a conversation started. Use “Ask a follow-up” to open a thread about any of them.
How do I convert binary to decimal?
Multiply each digit by its power of two and add the results.
From the tool guide Ask a follow-upWhat is hexadecimal used for?
A compact way to write binary — each hex digit equals four bits.
From the tool guide Ask a follow-upDoes it support negative numbers?
Yes, a leading minus sign is kept.
From the tool guide Ask a follow-upHow big can the number be?
Very large; exact arithmetic is used.
From the tool guide Ask a follow-upWhat this tool does
Computers work in binary (base 2), programmers read memory in hexadecimal (base 16), Unix permissions use octal (base 8) and people count in decimal (base 10). A number base converter translates a value between these systems — and any other base from 2 up to 36.
How to use it, step by step
- Type the number.
- Select the base it is written in.
- Read the equivalent in every other base.
- Copy the value you need.
Tips from the guide
- Hex digits above 9 are A–F (case insensitive).
- Binary numbers only use 0 and 1.
- Count bits to see whether a value fits in 8, 16, 32 or 64 bits.
- Use base 36 for compact IDs.
Common mistakes to avoid
- Entering digits that do not exist in the chosen base (for example 2 in binary).
- Confusing decimal 10 with binary 10.
- Forgetting that leading zeros do not change the value.
Who uses it
- Programmers. Convert addresses, colours, flags and bit masks.
- Computer-science students. Check number-system homework.
- Electronics hobbyists. Work with binary and hex registers.
How to ask a question people can answer
A good thread on the Number Base Converter saves everyone time. Start with a title that names the exact problem, such as the input you used, the result you expected and the result you got. A title like “Not working” is hard to answer, while a title with the specifics gets replies quickly.
- Say what you tried. List the steps you followed and any settings you changed, so replies do not repeat what you already did.
- Share a small example. A short sample input and the output you saw is worth more than a long description. Remove anything private first.
- Mention your setup. Your device, browser and whether you are on a phone or a computer can explain many odd results.
- One question per thread. Separate topics get clearer answers and are easier to find later with the search box above.
- Come back and reply. If a suggestion worked, say so and upvote it, and if you found the fix yourself, post it for the next person.
Community rules
Be kind, stay on topic and keep personal data out of your posts. Do not post adult, hateful or illegal content, advertising or repeated links. Every post is shown with its author’s username and date, and posts that break these rules can be hidden by moderators. This space is for help with the Number Base Converter and related tasks, and it is separate from the sitewide discussion forum where broader topics live.