Convert inches to feet
PrintInch to Foot Conversion Table
| Inch (in) | Foot (ft) |
|---|---|
| 0.01 in | 0.0008333333 ft |
| 0.1 in | 0.0083333333 ft |
| 1 in | 0.0833333333 ft |
| 2 in | 0.1666666667 ft |
| 3 in | 0.25 ft |
| 5 in | 0.4166666667 ft |
| 10 in | 0.8333333333 ft |
| 20 in | 1.6666666667 ft |
| 50 in | 4.1666666667 ft |
| 100 in | 8.3333333333 ft |
| 1000 in | 83.3333333333 ft |
Feet and inches are the two primary length units used throughout North American architecture, home construction framing, interior design, real estate square footage calculations, and human body height measurement. While the foot (ft or ‘) is the standard customary unit used for room dimensions, ceiling heights, and athletic field lengths, the inch (in or “) is the fundamental submultiple used for precise wall stud spacing, screen sizes, and fractional carpentry.
Our free online Feet to Inches Converter provides instant, high-precision length conversions in both directions:
- Feet to Inches: Multiply feet by
12(exact international standard). - Inches to Feet: Divide inches by
12(or multiply by0.08333333).
Exact Conversion Formulas: Feet & Inches
Since the International Yard and Pound Agreement of 1959, one international foot is defined as exactly 12 international inches (0.3048 meters or 304.8 millimeters). This establishes exact mathematical relationships:
| Conversion Direction | Exact Mathematical Formula | Fractional Feet Equivalent |
|---|---|---|
| Feet to Inches | Inches = Feet × 12 |
Multiply ft by 12 (e.g., 5 ft × 12 = 60 in). |
| Inches to Feet | Feet = Inches ÷ 12 |
Feet = Inches × 0.08333333 |
Step-by-Step Calculation Example
To convert 15 feet to inches:
15 ft × 12 = 180 inches
Thus, 15 feet is equal to exactly 180 inches.
Foot to Inch Conversion Table
Below is a quick reference lookup table converting length measurements from 0.01 feet up to 1,000 feet:
| Feet (ft) | Inches (in) | Human Height, Construction & Architectural Benchmark |
|---|---|---|
| 0.01 ft | 0.12 in | 3.048 mm |
| 0.10 ft | 1.20 in | 30.48 mm (1 1/5 inches) |
| 1.00 ft | 12.00 in | 1.0 Foot Exact Benchmark (30.48 cm / US Male Size 14 Shoe) |
| 2.00 ft | 24.00 in | 24 inches (Standard wall stud framing layout spacing) |
| 3.00 ft (1 Yard) | 36.00 in | 36 inches (1 Yard / Standard exterior door width) |
| 5.00 ft | 60.00 in | 5 Feet 0 Inches (60 inches total) |
| 5.50 ft (5′ 6″) | 66.00 in | Average female body height (5 feet 6 inches = 66 inches) |
| 6.00 ft (6′ 0″) | 72.00 in | 6 Feet 0 Inches (72 inches total / 6-foot bed length) |
| 8.00 ft | 96.00 in | Standard residential ceiling height & drywall panel length (96″) |
| 10.00 ft | 120.00 in | Regulation NBA basketball hoop height (10 feet = 120 inches) |
| 50.00 ft | 600.00 in | 600 Inches (15.24 meters) |
| 100.00 ft | 1,200.00 in | 1,200 Inches (30.48 meters / 100-foot tape measure) |
| 1,000.00 ft | 12,000.00 in | 12,000 Inches (304.8 meters) |
History & Standards: The Anthropic Foot vs. Roman Uncia
The Origin of the Foot (ft)
The foot is an anthropic measurement historically based on the physical length of a human foot. Across ancient Greece, Rome, medieval England, and pre-revolutionary France, local foot measurements varied from 250 mm to 335 mm. In England, the foot was standardized as 1/3rd of a yard. In 1959, the International Yard and Pound Agreement defined 1 international foot as exactly 0.3048 meters (304.8 mm). Today, 1 foot corresponds closely to a human foot size 14 (US male) or size 46 (EU).
The Origin of the Inch (in)
The word inch stems from the Latin uncia, meaning “a twelfth part” (1/12th of a Roman foot). In 1324, King Edward II of England decreed that 1 inch equaled the length of 3 dry, round barleycorns placed end-to-end. In 1959, the inch was internationalized as exactly 25.4 millimeters, establishing the permanent 12:1 ratio between feet and inches.
To convert inches back to feet, visit our Inches to Feet Converter. For centimeter conversions, check our Inches to Cm Converter. For metric height conversions, visit our Meters to Feet Converter, Height Calculator, or Conversion Calculator.
Frequently Asked Questions (FAQ)
How many inches are in 1 foot?
There are exactly 12 inches in 1 foot.
How many feet is 1 inch?
There are 0.083333 feet (1/12th of a foot) in 1 inch.
How many total inches is 5 feet 6 inches tall?
Multiply 5 feet by 12, then add 6: (5 × 12) + 6 = 60 + 6 = 66 inches.
How many total inches is 6 feet 0 inches tall?
6 feet equals 6 × 12 = 72 inches.
How many inches is an 8-foot ceiling or drywall sheet?
An 8-foot ceiling equals 8 × 12 = 96 inches.