Binary Converter

Convert a binary number to decimal, hex, octal, or ASCII text using the converter below.

How to Convert a Binary Number

To convert a binary number to decimal, use the following formula:

decimal number₁₀ = (d₀ × 2⁰) + (d₁ × 2¹) + … + (d_{n – 1} × 2^{n – 1})

In the formula above, d₀ is the binary digit furthest to the right, d₁ is the digit one position from the right, and d_{n – 1} is the digit furthest to the left.

Binary Conversion Resources

Use our binary conversion resources to learn more about binary calculations: