Number base converter online (base 2 to 36)
Convert a number between arbitrary bases (2 to 36), right in your browser.
11111111377255FF🔒 100% client-side — no data sent
Convert a number between any bases, from base 2 to base 36, in an instant. Binary, octal, decimal, hexadecimal or a custom base are all supported. Everything is computed 100% in your browser, with no data transmitted.
What is it for?
- ▸ Convert a hexadecimal value to decimal to read a color code
- ▸ Go from binary to decimal for algorithm exercises
- ▸ Check an address or mask expressed in octal
- ▸ Explore unusual bases like base 36 to shorten identifiers
FAQ
How do I convert a binary number to decimal?
Select base 2 as input and base 10 as output, then type your number: the conversion appears automatically, with no manual math.
Why is base 36 the maximum limit?
Base 36 uses the ten digits (0-9) and the twenty-six letters of the alphabet (a-z), which are all the alphanumeric characters available to represent a single digit.
Can I convert negative or fractional numbers?
The tool focuses on integers, which cover the vast majority of programming needs. For a negative number, convert its absolute value and add the sign back.