Feet to Inches Converter
Convert Feet (ft) to Inches (in) instantly.
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Conversion Result
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Formula & Conversion Step:
What is the Feet to Inches Converter?
The Feet (ft) to Inches (in) converter is a classic intra-system tool. Because the US Imperial system operates on a base-12 scale (rather than base-10), this tool unpacks larger feet units into pure, granular inches.
How It Works (Formula)
The Imperial system defines exactly 12 inches as 1 foot. Therefore, to convert a distance measured in feet down into pure inches, the calculator multiplies your inputted value by exactly 12.
$$ L_{(\text{in})} = L_{(\text{ft})} \times 12 $$
The simple base-12 multiplication used inside the US Imperial system.
How to Use It
Input the measurement in decimal Feet (e.g., 4.5 ft). The calculator will instantly multiply it by 12 and output the total flat length in Inches (in). For example, an 8-foot piece of lumber contains exactly 96 inches.