Convert Feet (ft) to Inches (in)
1 feet equals 12 inches.
Formula:
in = ft × 12
Foot to Inch Converter
Enter a numeric value or fraction to convert
Result
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Recent Conversions
How to Convert Feet to Inch
1 foot = 12 inches exact
Inch = Feet × 12
Example: 1 ft × 12 = 12 in
Reverse Conversion
To convert inches back to feet:
- Remember, 1 inch equals 112 feet.
- To convert 12 in to ft, multiply
12 x 112, resulting in1 ft.
exact This conversion factor is exact by international definition.
Fractional Inches to Feet Chart
Common fractional inch values and their equivalents in ft. Useful for machining, woodworking, drill bits, and precision measurements.
Fractions of an inch (1/64″ to 1″)
| Fraction (in) | Decimal (in) | ft |
|---|---|---|
| 1/64″ | 0.0156 | 0.0013 |
| 1/32″ | 0.0313 | 0.0026 |
| 3/64″ | 0.0469 | 0.0039 |
| 1/16″ | 0.0625 | 0.0052 |
| 5/64″ | 0.0781 | 0.0065 |
| 3/32″ | 0.0938 | 0.0078 |
| 7/64″ | 0.1094 | 0.0091 |
| 1/8″ | 0.1250 | 0.0104 |
| 9/64″ | 0.1406 | 0.0117 |
| 5/32″ | 0.1563 | 0.0130 |
| 11/64″ | 0.1719 | 0.0143 |
| 3/16″ | 0.1875 | 0.0156 |
| 13/64″ | 0.2031 | 0.0169 |
| 7/32″ | 0.2188 | 0.0182 |
| 15/64″ | 0.2344 | 0.0195 |
| 1/4″ | 0.2500 | 0.0208 |
| 17/64″ | 0.2656 | 0.0221 |
| 9/32″ | 0.2813 | 0.0234 |
| 19/64″ | 0.2969 | 0.0247 |
| 5/16″ | 0.3125 | 0.0260 |
| 21/64″ | 0.3281 | 0.0273 |
| 11/32″ | 0.3438 | 0.0286 |
| 23/64″ | 0.3594 | 0.0299 |
| 3/8″ | 0.3750 | 0.0313 |
| 25/64″ | 0.3906 | 0.0326 |
| 13/32″ | 0.4063 | 0.0339 |
| 27/64″ | 0.4219 | 0.0352 |
| 7/16″ | 0.4375 | 0.0365 |
| 29/64″ | 0.4531 | 0.0378 |
| 15/32″ | 0.4688 | 0.0391 |
| 31/64″ | 0.4844 | 0.0404 |
| 1/2″ | 0.5000 | 0.0417 |
| 33/64″ | 0.5156 | 0.0430 |
| 17/32″ | 0.5313 | 0.0443 |
| 35/64″ | 0.5469 | 0.0456 |
| 9/16″ | 0.5625 | 0.0469 |
| 37/64″ | 0.5781 | 0.0482 |
| 19/32″ | 0.5938 | 0.0495 |
| 39/64″ | 0.6094 | 0.0508 |
| 5/8″ | 0.6250 | 0.0521 |
| 41/64″ | 0.6406 | 0.0534 |
| 21/32″ | 0.6563 | 0.0547 |
| 43/64″ | 0.6719 | 0.0560 |
| 11/16″ | 0.6875 | 0.0573 |
| 45/64″ | 0.7031 | 0.0586 |
| 23/32″ | 0.7188 | 0.0599 |
| 47/64″ | 0.7344 | 0.0612 |
| 3/4″ | 0.7500 | 0.0625 |
| 49/64″ | 0.7656 | 0.0638 |
| 25/32″ | 0.7813 | 0.0651 |
| 51/64″ | 0.7969 | 0.0664 |
| 13/16″ | 0.8125 | 0.0677 |
| 53/64″ | 0.8281 | 0.0690 |
| 27/32″ | 0.8438 | 0.0703 |
| 55/64″ | 0.8594 | 0.0716 |
| 7/8″ | 0.8750 | 0.0729 |
| 57/64″ | 0.8906 | 0.0742 |
| 29/32″ | 0.9063 | 0.0755 |
| 59/64″ | 0.9219 | 0.0768 |
| 15/16″ | 0.9375 | 0.0781 |
| 61/64″ | 0.9531 | 0.0794 |
| 31/32″ | 0.9688 | 0.0807 |
| 63/64″ | 0.9844 | 0.0820 |
| 1″ | 1.0000 | 0.0833 |
Whole inches (2″ to 12″)
| Inches | ft |
|---|---|
| 2″ | 0.1667 |
| 3″ | 0.2500 |
| 4″ | 0.3333 |
| 5″ | 0.4167 |
| 6″ | 0.5000 |
| 7″ | 0.5833 |
| 8″ | 0.6667 |
| 9″ | 0.7500 |
| 10″ | 0.8333 |
| 11″ | 0.9167 |
| 12″ | 1.0000 |
Bold rows indicate common fractions (1/8, 1/4, 3/8, 1/2, etc.). The conversion factor 1 inch = 25.4 mm is exact by international definition.
Feet to inches Conversion Table
Reference table with common feet to inches conversions. All values calculated with high precision.
Feet to Inches Table
1 to 100000
Inches to Feet Table
100 to 10000000
Definition of Inch
- Definition
- Imperial/US customary unit standardized as exactly 25.4 millimeters since 1959.
- Exact factor
- 1 in = 25.4 mm = 2.54 cm
- Sources
- NIST SP 811
About the Foot
Facts & Uses
- Foundation of US construction: room dimensions, ceiling heights, lumber lengths (2×4×8 ft); building codes specify clearances in feet.
- Aviation standard: altitude measured in feet globally (Flight Level 350 = 35,000 ft), regardless of country's measurement system.
- Surveying and real estate: property descriptions, lot dimensions, setback requirements; square footage for area calculations.
- Sports: American football (100-yard field with yard markers), basketball (10-ft rim), diving platforms.
Curiosities
- Ancient origin from human foot length; standardized to avoid measurement disputes in trade and law.
- Exact definition: 0.3048 meters (1959 international yard and pound agreement).
- Notation mixing: feet-inches (5'6") vs. decimal feet (5.5 ft) in different industries and applications.
- International aviation uses feet for altitude despite metric adoption elsewhere; ensures global air traffic safety.
Sources
About the Inch
Facts & Uses
- Dominant in US construction, plumbing (pipe diameters), electronics (screen sizes), and hardware (screws, bolts).
- Screen technology: TVs, monitors, phones measured diagonally in inches; DPI (dots per inch) defines display resolution.
- Fractional system in construction: 1/2", 1/4", 1/8", 1/16" for precise fitting; decimal inches in engineering and machining.
- Paper sizes: US letter 8.5 × 11 inches, legal 8.5 × 14 inches; tire dimensions use inches for rim diameter.
Curiosities
- Historical origin: three barleycorns placed end-to-end; width of adult thumb at knuckle.
- Exactly 25.4 mm since 1959 international agreement, ending slight variations between countries.
- Symbol "" (double prime) distinguishes from feet (') in architectural and engineering drawings.
- Smartphone screens paradox: measured diagonally in inches despite metric internal components and manufacturing.
Sources
Frequently Asked Questions
How many inches are in one feet?
One feet equals 12 inches. To convert, multiply the feet value by 12. For the reverse, divide the inch value by 12 (or multiply by 112).
What is 0.35 feet in inches?
0.35 feet = 4 15 inches. This is one of the most commonly searched conversions for this pair.
Is the feet-to-inch conversion exact?
Yes. The factor 12 is exact by international definition, not an approximation. Any imprecision comes only from the original measurement, not the conversion.
Looking for the reverse? Convert Inch to Feet
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Conversion factors verified against NIST, BIPM, ISO 80000-3
1 inch = 2.54 cm by international agreement (1959).
Last reviewed: March 2026
