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 |
Inches and feet are the primary unit subdivisions of the customary and imperial systems of measurement used across the United States, Canada, and the United Kingdom. Whether you are reading construction blueprints, measuring lumber for woodworking, calculating room square footage, or tracking body height growth, converting between inches (in) and feet (ft) relies on a clean base-12 relationship.
Our free online Inches to Feet Converter provides instant, accurate length conversions in both directions:
- Inches to Feet: Divide inches by
12(or multiply by0.08333333). - Feet to Inches: Multiply feet by
12(exact international standard).
Exact Conversion Formulas: Inches & Feet
Since the International Yard and Pound Agreement of 1959, one foot is defined as exactly 12 inches (and 1 yard equals 3 feet or 36 inches). This establishes exact mathematical relationships:
| Conversion Direction | Exact Mathematical Formula | Quick Mental Approximation Rule |
|---|---|---|
| Inches to Feet | Feet = Inches ÷ 12 |
Divide inches by 12 (e.g., 24 in ÷ 12 = 2 feet). |
| Feet to Inches | Inches = Feet × 12 |
Multiply feet by 12 (e.g., 5 feet × 12 = 60 inches). |
Step-by-Step Calculation Example
To convert 15 inches to feet:
15 in ÷ 12 = 1.25 feet (or 1 foot and 3 inches)
Thus, 15 inches is equal to exactly 1.25 feet (1¼ ft).
Inch to Foot Conversion Table
Below is a handy reference lookup table for converting customary measurements from 0.01 in up to 1,000 in:
| Inches (in) | Decimal Feet (ft) | Fractional Foot Equivalent |
|---|---|---|
| 0.01 in | 0.00083333 ft | 1/1200 ft |
| 0.1 in | 0.00833333 ft | 1/120 ft |
| 1.0 in | 0.08333333 ft | 1/12 ft |
| 2.0 in | 0.16666667 ft | 1/6 ft |
| 3.0 in | 0.25000000 ft | 1/4 ft (Quarter Foot) |
| 6.0 in | 0.50000000 ft | 1/2 ft (Half Foot) |
| 9.0 in | 0.75000000 ft | 3/4 ft (Three-Quarter Foot) |
| 12.0 in (1 Foot Exact) | 1.00000000 ft | 1.0 Foot Exact Benchmark |
| 15.0 in | 1.25000000 ft | 1¼ ft (1 ft 3 in) |
| 24.0 in | 2.00000000 ft | 2.0 Feet (Standard wall stud spacing) |
| 36.0 in (1 Yard Exact) | 3.00000000 ft | 3.0 Feet (1 Yard) |
| 50.0 in | 4.16666667 ft | 4 ft 2 in |
| 100.0 in | 8.33333333 ft | 8 ft 4 in |
History & Origins: Inch vs. Foot
The Roman Origin of the Inch (in)
The English word inch derives from the Latin uncia, which designated “one-twelfth” of a Roman foot (pes). The same Latin root gave rise to the word ounce (one-twelfth of a Roman pound). Folk definitions of the inch included King Edward II’s 1324 decree setting an inch equal to 3 dry, round barleycorns placed end-to-end, as well as medieval standards based on the average width of three human thumbs.
The Anthropic Origin of the Foot (ft)
Historically, units of length were based on human body parts (anthropic units). Across ancient Greek, Roman, French, and English history, a “foot” varied between 250 mm and 335 mm depending on local rulers. In 1959, international standards bureaus locked the foot to the metric system as exactly 304.8 mm (0.3048 m or 12 inches). Anatomically, an international foot corresponds to a male human shoe size 14 (US), 13 (UK), or 46 (EU).
To convert metric lengths to customary units, use our Cm to Inches Converter. For human body height conversions, visit our Height Calculator. For general unit transformations across length, volume, and mass, explore our Conversion Calculator.
Frequently Asked Questions (FAQ)
How many feet are in 1 inch?
There are exactly 1/12th of a foot in 1 inch (approximately 0.083333 feet).
How many inches are in 1 foot?
There are exactly 12 inches in 1 foot.
How do I convert 68 inches into feet and inches?
Divide 68 by 12: 68 ÷ 12 = 5 feet with a remainder of 8 inches. Thus, 68 inches equals 5 feet 8 inches (5′ 8″).
What is 24 inches in feet?
24 inches equals exactly 24 ÷ 12 = 2 feet. In US residential construction, wall framing studs are traditionally spaced 16 or 24 inches apart on center.