Number Base Converter — Binary, Hex, Decimal
Convert numbers between binary, octal, decimal, and hexadecimal online for free. Instant conversion, no signup required.
Convert numbers between binary, decimal, hexadecimal, and octal. Enter a value in any base and get the equivalent in all others.
How to use Number Base Converter — Binary, Hex, Decimal
- Enter a number in any supported base.
- Select the input base (binary, decimal, hex, or octal).
- Read the converted values in all other bases.
Features
- Supports binary (base 2), octal (base 8), decimal (base 10), and hex (base 16).
- Auto-detects input base when possible.
- Handles large numbers up to 64-bit.
- Instant conversion as you type.
FAQ
How do I convert binary to decimal manually?
Multiply each bit by its place value (powers of 2) and sum. For 1011: 1*8 + 0*4 + 1*2 + 1*1 = 11. This tool does it instantly for any size number.
What is hex used for?
Hexadecimal is commonly used in programming for memory addresses, color codes (#FF5733), and byte values. It's more compact than binary (one hex digit = four bits) and easier to read than decimal for bitwise operations.
Can this handle fractional numbers?
This tool converts integers only. Fractional number conversion between bases involves different algorithms and is less commonly needed in programming.