Number Base Converter (Binary, Decimal, Hex)
Type a number in one base and see it in binary, octal, decimal, hexadecimal and base 36 at the same time.
Your data stays on your device.
Free, no sign-up needed.
Enter a number to see it in every base.
Features
- Binary, octal, decimal, hexadecimal and base 36
- Exact results for very large numbers
- Understands 0x, 0b and 0o prefixes
- Runs on your device
How to use Number Base Converter
- Enter the number.
- Choose the base it is written in.
- Copy the result in the base you need.
Frequently asked questions
How do I convert binary to decimal?
Choose binary as the base and type the number. 1010 in binary is 10 in decimal. Each position is a power of two, starting from the right.
What is hexadecimal?
Base 16, which uses the digits 0 to 9 and the letters A to F. It is common for colors and memory addresses, because two hex digits describe exactly one byte.
Can it handle very large numbers?
Yes. The tool uses exact whole number arithmetic, so there is no rounding, however long the number is.
Are decimals and fractions supported?
No, only whole numbers, which can be negative.