Binary Fraction Converter

Convert a decimal value (with a fractional part) to binary.

Binary 101.101

Formula: Whole part by division, fraction by repeated ×2

Step-by-step with your numbers:
1. Values used:
2. Decimal value = 5.625
3.
4. Binary = 101.101
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Convert numbers with decimal fractions into binary, including the bits after the point.

The math behind it

Convert the whole part by division. For the fraction, repeatedly multiply by 2 and record each whole-number carry as the next binary bit.

Worked example

5.625 = 101.101 in binary.

FAQ

Why might it not terminate?

Many decimal fractions repeat forever in binary (like 0.1), so the result is truncated.