Convert feet to inches

Length Converter with Foot (ft) to Inch (in) Conversion

Converting feet (ft) to inches (in) is essential for height, lumber dimensions, and any US customary measurement expressed in feet that you need in inches. Twelve inches make exactly one foot, so inches = feet × 12 with no approximate factor.

Feet to Inches Formula

in = ft × 12

Multiply the length in feet by 12 to get inches. This is an exact relationship defined within the US customary and imperial systems.

Common foot to inch values

Example: Board Length

A piece of lumber is 8 feet long. How many inches is that?

• Identify the length in feet: 8 ft
• Multiply by 12: 8 × 12
• Calculate the result: 96

8 feet equals exactly 96 inches.

About the Units

One Foot (ft) equals 12 Inches (in)

One Inch (in) equals 0.083333 Foot (ft)

Where This Conversion Is Used

• Convert Foot to Inch to ensure consistent values across calculations, reports, and measurement systems.
• Helps compare dimensions when switching between metric and imperial measurements, commonly required when reading construction drawings, machining tolerances, and US-based product specifications.
• Frequently used to validate dimensions taken from CAD models, blueprints, survey maps, and engineering documents that mix inch- and meter-based units.

Frequently Asked Questions

References

• NIST: Systems of Units of Measurement