Number Base Converter
Convert between binary, octal, decimal, and hexadecimal. Edit any field.
Convert numbers between binary, octal, decimal, and hexadecimal. Enter a value in any base and see all four at once, in your browser.
How to use Number Base
- Enter a number in any base.
- Pick which base you typed.
- See the binary, octal, decimal, and hex equivalents.
- Copy whichever you need.
Frequently asked questions
What are these bases used for?
Binary and hexadecimal are common in programming, hex for colors and memory addresses, binary for bitwise work. Decimal is everyday base-10.
Can it handle large numbers?
Yes, within standard integer limits. Very large values beyond safe integer precision may lose accuracy.
Is anything saved?
No. Conversion runs locally in your browser; nothing is stored or sent.
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