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Calixo

Binary Calculator

Convert a decimal number to binary, octal and hexadecimal.

Inputs

Saved Scenarios

— select 2+ to compare

Binary

11001010

Octal

312

Hexadecimal

CA

Spark says

Formula

Decimal→Base 2 (binary), Base 8 (octal), Base 16 (hex)Decimal \rightarrow Base\ 2\ (binary),\ Base\ 8\ (octal),\ Base\ 16\ (hex)
Base\ N
— Number system using N distinct digit symbols

What is the Binary Calculator?

Computers represent numbers in binary (base 2) at the hardware level — this calculator converts an everyday decimal (base 10) number into binary, along with the octal and hexadecimal forms often used as more compact shorthand for binary values.

How to use it

  1. 1 Enter a decimal (whole) number — negative values are supported.

Worked examples

202

11001010 in binary, CA in hex, 312 in octal.

Try it

Frequently asked questions

Why is hexadecimal used instead of just binary?

Hex is far more compact — each hex digit represents exactly 4 binary bits, so a 32-bit value that's 32 characters in binary is just 8 characters in hex, much easier for humans to read and type.