Converter
Start from one base, then compare the matching binary, octal, decimal, and hexadecimal forms from the same value without switching between multiple utilities.
Source base
Use normal base-10 input when you are starting from a human-readable number.
Converted values
Review the same number in the other common bases and copy the one you need.
Binary
Base 2
Octal
Base 8
Decimal
Base 10
Hexadecimal
Base 16
How to Use This Base Converter
Use it as a quick number workbench: enter a value once, choose the right source base, then copy the output you need without redoing base math by hand.
Paste a value in any supported base
Start with binary, octal, decimal, or hexadecimal input. The converter validates the digits for that base before updating the rest.
Pick the base you are working from
Choose the source base first so the tool knows how to interpret the digits you entered.
Compare the other representations
Check the binary, octal, decimal, and hexadecimal outputs side by side instead of converting each one manually.
Copy the value you need
Use the copy action on any output card when you need the converted value in code, docs, logs, or debugging tools.
When This Tool Is Most Useful
Base conversion becomes useful whenever a value makes more sense in a different number system, especially during low-level debugging, protocol inspection, and systems work.
Bitwise and low-level work
Move between decimal, binary, and hex when you are checking masks, flags, memory values, or machine-friendly output.
Hardware and embedded debugging
Read raw values more comfortably when you are inspecting registers, device output, or protocol fields.
Color, IDs, and stored values
Translate hex values and numeric identifiers when data is represented differently across tools or environments.
Protocol inspection
Compare packet fields, encoded values, and system output when a number is easier to reason about in another base.
FAQs
Which bases does this support?
It supports binary, octal, decimal, and hexadecimal conversion from the same workbench.Can it handle large numbers?
Yes. It uses BigInt so you can work with large integer values without losing precision to normal JavaScript number limits.Why does the tool reject some input?
Each base only allows certain digits. For example, binary only accepts 0 and 1, while hexadecimal allows 0-9 and A-F.Does this run locally?
Yes. Conversion happens in your browser so the values you test do not need to leave the page.