Convert feet to inches and back with fractional inch display (⅛, 1/16, 1/32). Includes ruler visualization, combined feet + inches output, and conversion reference table.
One foot equals exactly 12 inches — one of the most fundamental conversions in the US customary measurement system. Carpenters, crafters, builders, tailors, and anyone measuring in the imperial system needs this conversion daily. The reverse — inches to feet — is equally important for converting tape-measure readings to floor-plan dimensions.
This tool goes beyond simple multiplication by offering fractional inch display in ⅛, 1/16, or 1/32-inch precision, matching real-world tape measure markings. It also outputs centimeters, meters, millimeters, and yards, and provides a visual ruler representation for measurements up to 4 feet.
Whether you are converting decimal feet from a survey to inches for construction, converting an inch measurement from a sewing pattern to feet for material ordering, or just need a quick reference table showing feet-to-inches equivalents, this calculator provides every output format and reference you need for accurate field, workshop, and home-improvement tasks, including routine estimating, quoting, and material cut-list preparation.
The 12-inches-per-foot conversion is simple, but decimal values and fractions make it error-prone. This tool handles fractional inches (⅛, 1/16, 1/32) like a tape measure, provides a ruler visual, and extends output to metric units for cleaner communication across project teams, suppliers, estimators, and workshop documentation workflows every day in real project environments.
Inches = Feet × 12 Feet = Inches ÷ 12 1 inch = 2.54 cm (exact)
Result: 69 inches / 5′ 9″
5.75 × 12 = 69 inches. The remainder is 0.75 × 12 = 9 inches, giving 5′ 9″. In metric: 175.26 cm.
US construction plans are typically dimensioned in feet and inches (e.g., 12′-6″ for twelve feet six inches). Builders convert these to decimal feet for calculations or to total inches for measuring and cutting. Understanding the 12-inch foot and fractional inches is essential for reading blueprints, cutting materials, and laying out structures.
US tape measures divide each inch into 16 or 32 equal parts. The markings decrease in length: ½″ (longest), ¼″, ⅛″, 1/16″ (shortest). Woodworkers often work to 1/16″ precision, while machinists may need 1/32″ or finer. This calculator's fraction mode rounds to the nearest ⅛, 1/16, or 1/32 inch, matching real tape-measure resolution.
Land surveyors use decimal feet (e.g., 123.456 ft) rather than feet-and-inches to avoid fraction arithmetic errors. To convert a survey distance to construction measurements: multiply the decimal by 12, then express as feet-and-inches. This tool does it automatically.
Exactly 12 inches. This is the definition of a foot in the imperial system.
5 feet exactly. 60 ÷ 12 = 5.
The whole part is 5 feet. The decimal 0.5 × 12 = 6 inches. So 5.5 ft = 5′ 6″.
6 feet exactly. 72 ÷ 12 = 6. This is the height of a standard 6-foot person.
The number 12 was chosen because it is highly divisible (by 2, 3, 4, and 6), making fractions simpler. This dates back to ancient Babylonian and Roman measurement systems.
The longest mark after an inch is ½. Next longest are ¼ and ¾. Then ⅛, and smallest are 1/16. This tool can display your measurement in any of these fractions.