Feet to Inches Converter: Complete Guide to Converting Feet to Total Inches
Converting feet to inches is the simplest operation in the imperial length system — multiply by 12 — yet it is needed constantly in construction, manufacturing, sports, and everyday measurement. Architects write dimensions in feet and inches, but fabricators cut materials by total inches. US height records appear in feet and inches, but clothing inseams are listed in inches. This converter handles both whole feet and feet-plus-inches inputs, showing the total inch count with an animated ruler, a multiplication grid, and a complete breakdown of all related units.
The ×12 Rule
The relationship is exact by definition: 1 foot = 12 inches. Multiply any value in feet by 12 to get inches. For a feet-and-inches measurement, multiply the feet by 12 and add the extra inches. This is the reverse of the more complex inch-to-foot division; multiplication is always simpler. For 5 feet 7 inches: (5 × 12) + 7 = 60 + 7 = 67 inches. For 6 feet exactly: 6 × 12 = 72 inches.
For whole feet: inches = feet × 12
For ft + in: inches = (feet × 12) + extra_inches
Common results:
4 ft = 48 in
5 ft = 60 in
5'7" = 67 in
6 ft = 72 in
6'2" = 74 in
7 ft = 84 in
Construction and Carpentry
In carpentry and construction, converting feet to inches is constant work. Standard lumber board lengths — 8 feet (96 in), 10 feet (120 in), 12 feet (144 in) — must often be expressed as total inches for calculating cuts. A trim piece of 3 feet 4 inches = 40 inches needs to be cut from a 4-foot (48-inch) board, leaving 8 inches. Crown molding is measured in linear feet but cut in inches. When setting out foundation bolt patterns, each spacing must be converted from feet to inches for layout on the slab.
Fabric and Sewing
The textile industry freely switches between feet and inches. Fabric is sold by the yard (36 inches) but often patterned in feet and inches. A dress pattern calling for 2 feet 6 inches of fabric = 30 inches. Standard fabric widths are 44 inches (3 feet 8 inches) or 60 inches (5 feet). Sewing patterns list seam allowances in inches (5/8 inch standard), while garment lengths are given in feet and inches. Converting between the two is routine sewing prep work, especially when adapting patterns for different heights.
Sports Measurements
Sports extensively use feet-to-inches conversions. A regulation basketball court is 94 feet long = 1,128 inches. The three-point line in the NBA is at 23 feet 9 inches = 285 inches from the basket. A regulation football field is 100 yards (300 feet = 3,600 inches) plus two 10-yard (120-inch) end zones. Baseball pitching distance is 60 feet 6 inches = 726 inches. High jump world record 7 feet 4½ inches = 88.5 inches. Swimming pool Olympic lanes are 8 feet (96 inches) wide. These conversions matter when designing facilities and writing technical specifications.
Furniture and Interior Design
Interior dimensions are specified in feet and inches but fabricated in inches. A sofa that is 7 feet 2 inches long = 86 inches needs an 88-inch (7 ft 4 in) minimum wall clearance. Standard door width of 2 feet 8 inches = 32 inches. Ceiling height of 8 feet = 96 inches determines maximum furniture height. King bed = 76 inches wide (6 feet 4 inches) × 80 inches long (6 feet 8 inches). When ordering custom furniture, manufacturers need total inch measurements — not feet and inches — for material cutting and production specs.
Photography and Film
Filmmaking uses both measurement systems for different purposes. Camera lens focal lengths are in millimeters; shooting distances are in feet and inches. A lens with a 5-foot (60-inch) minimum focus distance. Standard studio lighting distances: key light at 5 feet 6 inches = 66 inches from subject. Backdrop paper rolls are sold in feet (107 inches = 8 feet 11 inches wide). Depth of field calculators need subject distance in consistent units. Converting a 7-foot (84-inch) backdrop distance to inches ensures accurate focal length and aperture calculations for a sharp background.
How to Use This Converter
Enter feet in the first field and extra inches in the second field (leave inches blank or 0 for whole feet). Quick-value buttons cover the most common height and length conversions from 4 ft to 7 ft. The segmented ruler canvas draws a scale ruler with each foot block colored separately, showing the breakdown visually. The multiplication grid displays a square for each inch in the result — blue squares for the feet-component, orange for the extra inches — giving an immediate visual sense of the magnitude. Six unit cards show simultaneously: feet input, total inches, centimeters, meters, yards, and millimeters.