Feet to Inches Converter

What Are Feet and Inches?

This Feet to Inches Converter uses the internationally standardized definitions of both units, ensuring accurate results for every conversion from simple height measurements to professional construction and engineering applications.

Foot (ft)

The foot is a unit of length in the imperial and US customary systems equal to exactly 12 inches or one third of a yard. It was formally defined as exactly 0.3048 meters in 1959 under the international yard agreement. The foot is widely used in the United States, United Kingdom, and Canada for measuring height, room dimensions, building materials, and aviation altitude.

1 ft = 12 in = 0.3048 m = 30.48 cm

Inch (in)

The inch is the smaller imperial length unit equal to exactly one twelfth of a foot or 2.54 centimeters. It was standardized to exactly 25.4 millimeters in 1959. The inch is used in the US, UK, and Canada for measuring smaller objects, screen sizes, paper dimensions, clothing measurements, and hardware specifications.

1 in = 0.0833 ft = 2.54 cm = 25.4 mm

Conversion Formula

Method — Multiplication

Inches = Feet x 12

Example: Convert 5 feet to inches
5 x 12 = 60 inches

Combined Feet and Inches to Total Inches

Total Inches = (Feet x 12) + Remaining Inches

Example: Convert 5 feet 10 inches to total inches
(5 x 12) + 10 = 60 + 10 = 70 inches

Common ft to in Conversion Examples

Quick reference for the most frequently searched feet to inches values:

Feet (ft)	Inches (in)	Common Context
0.5 ft	6 in	Half foot, standard ruler half length
1 ft	12 in	Base conversion, standard ruler length
1.5 ft	18 in	One and a half feet
2 ft	24 in	Two feet, standard desk height reference
3 ft	36 in	Three feet, one yard, standard countertop height
4 ft	48 in	Four feet, average door width
5 ft	60 in	Five feet, common height reference
5.5 ft	66 in	Five and a half feet
6 ft	72 in	Six feet, tall adult height reference
6.5 ft	78 in	Six and a half feet
7 ft	84 in	Seven feet, standard door height
8 ft	96 in	Eight feet, standard ceiling height
10 ft	120 in	Ten feet, standard room width
12 ft	144 in	Twelve feet, one square in flooring

Height Reference Table — Feet and Inches to Total Inches

Height (ft = in)	Total Inches (in)
5 ft 0 in	60 in
5 ft 1 in	61 in
5 ft 2 in	62 in
5 ft 3 in	63 in
5 ft 4 in	64 in
5 ft 5 in	65 in
5 ft 6 in	66 in
5 ft 7 in	67 in
5 ft 8 in	68 in
5 ft 9 in	69 in
5 ft 10 in	70 in
5 ft 11 in	71 in
6 ft 0 in	72 in
6 ft 1 in	73 in
6 ft 2 in	74 in
6 ft 3 in	75 in

Feet Compared to Other Length Units

1 Foot Equals	Value	System	Common Use
Inches (in)	12 in	Imperial	Standard conversion
Meters (m)	0.3048 m	Metric	International standard
Centimeters (cm)	30.48 cm	Metric	Centimeter equivalent
Millimeters (mm)	304.8 mm	Metric	Millimeter equivalent
Yards (yd)	0.333 yd	Imperial	One third of a yard
3 Feet	1 yard	Imperial	Yard equivalent

Need metric conversion, try our Feet to CM Converter.

Common Use Cases

Use Case	Description
Height Measurement and Medical Records	Height in the United States is recorded in feet and inches. Medical forms, sports profiles, dating profiles, and fitness apps often require height entry in total inches rather than the combined format. Use this Feet to Inches Converter when a form requires total inches or when calculating BMI which requires height in inches for US customary formula inputs.
Construction and Building Projects	Architectural drawings, lumber dimensions, ceiling heights, and room measurements are typically specified in feet while hardware, screws, pipes, and fittings are specified in inches. Accurate ft to in conversion prevents material waste and fitting errors on construction and renovation projects.
Interior Design and Furniture Placement	Furniture dimensions, window measurements, door frame widths, and ceiling clearances are often listed in feet while fabric, trim, and tile measurements are listed in inches. Converting accurately is essential for measuring whether furniture will fit in a space and for ordering the correct quantity of materials.
Electronics and Screen Sizes	Screen diagonals for televisions, monitors, tablets, and smartphones are measured in inches while room dimensions and viewing distance recommendations are given in feet. Converting the room size to inches helps calculate the optimal screen size for a given viewing distance.
Aviation and Altitude	Flight altitude worldwide is measured in feet regardless of the country or local measurement system. Understanding altitude in inches is useful for calculating pressure changes, cabin pressurization specifications, and understanding technical aviation documentation that references measurements in mixed units.

Common Mistakes to Avoid

Misreading the Prime Notation

The symbol for feet is a single prime mark and the symbol for inches is a double prime mark. Many users confuse single and double quote marks with prime notation when reading written measurements. A single quote always represents feet and a double quote always represents inches. So 6 foot 2 inches written in short form means 6 feet 2 inches, not 62 of anything.

Forgetting to Add the Remaining Inches

When converting a combined feet and inches measurement to total inches, the most common error is only multiplying the feet value and forgetting to add the remaining inches. Five feet ten inches is not 60 inches, it is 70 inches. Always multiply the feet by 12 first then add the remaining inches separately.

Confusing Linear Feet with Square Feet

Linear feet measure length in one dimension while square feet measure area in two dimensions. This converter works with linear feet only. Converting square feet to square inches requires multiplying by 144 not 12, since both dimensions are being converted simultaneously.

Quick Reference Values

Feet (ft)	Inches (in)
0.5 ft	6 in
1 ft	12 in
1.5 ft	18 in
2 ft	24 in
3 ft	36 in
4 ft	48 in
5 ft	60 in
6 ft	72 in
7 ft	84 in
8 ft	96 in
10 ft	120 in
12 ft	144 in

Frequently Asked Questions

How many inches are in a foot?

There are exactly 12 inches in one foot. This is the standard definition in both the US customary and imperial measurement systems and has been formally standardized since the International Yard and Pound Agreement of 1959.

What is 1 foot in inches?

1 foot equals exactly 12 inches. This is the base conversion ratio and the starting point for all feet to inches calculations.

How many inches is 5 feet?

5 feet equals exactly 60 inches. This is calculated by multiplying 5 by the standard conversion factor of 12. It is the most commonly searched feet to inches conversion because it is a common height reference point. Use this Feet to Inches Converter to verify any feet value instantly.

How many inches is 6 feet?

6 feet equals exactly 72 inches. This is the second most commonly searched height conversion and is calculated by multiplying 6 by 12.

How many inches is 5 feet 10 inches?

5 feet 10 inches equals 70 total inches. This is calculated by multiplying 5 by 12 to get 60, then adding the remaining 10 inches. This combined format conversion is one of the most searched height queries because 5 feet 10 inches is a common reported height in the United States.

How do I convert feet and inches to total inches?

Multiply the feet value by 12 and then add the remaining inches. For example, 4 feet 6 inches equals 48 plus 6 which equals 54 total inches. This formula works for any combined feet and inches measurement.

What is the symbol for feet and inches?

The standard symbols are ft for feet and in for inches. In shorthand notation, a single prime mark represents feet and a double prime mark represents inches. So 5 feet 8 inches can be written as 5 prime 8 double prime in formal notation or 5 foot 8 informally.

Can I use this converter for construction measurements?

Yes. This Feet to Inches Converter uses the exact standard conversion factor of 1 foot equals 12 inches, which is the same standard used in all US construction, architectural, and engineering specifications.

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