# Binary calculator

### Binary Definition

The free online binary calculator will convert a binary number to a decimal number or a decimal number to a binary number. Simply enter in either a binary number or a decimal number and then click on the calculate button. The binary number system is different from the decimal number system in that the binary system has a 0 or 1 numbering system and the decimal system has a 0 – 9 numbering system.

### How to Calculate Binary

Let’s be honest – sometimes the best binary calculator is the one that is easy to use and doesn’t require us to even know what the binary formula is in the first place! But if you want to know the exact formula for calculating binary then please check out the “Formula” box above.