Feet to Inches Conversion: Complete Guide

Feet and inches are both units of length, and together they form one of the most commonly used measurement combinations in the United States. Whether you are checking someone’s height, measuring a room, buying lumber, or reading a product’s dimensions, feet and inches show up constantly in everyday life, including:

• Human height
• Room dimensions
• Construction projects
• Furniture sizing
• Product dimensions
• Building measurements

This guide provides the exact feet-to-inches conversion formula, a complete conversion chart, decimal and fractional examples, and practical applications for converting between these two closely related units.

How Many Inches Are in a Foot?

1 foot = 12 inches. This is an exact relationship, not a rounded approximation.

• 1 ft = 12 in

Note that “foot” is the singular form and “feet” is the plural form. For example:

• 1 foot = 12 inches
• 5 feet = 60 inches

Feet to Inches Conversion Formula

The formula for converting feet to inches is:

inches = feet × 12

or written with symbols:

in = ft × 12

To convert a measurement from feet to inches, multiply the number of feet by 12.

Example: Convert 5 feet to inches.

5 × 12 = 60 inches

How to Convert Feet to Inches

Converting feet to inches follows a simple, repeatable process:

1. Start with the measurement in feet.
2. Multiply the number of feet by 12.
3. Add the unit “inches” to the final result.
4. Round only if the original measurement contains a decimal and rounding is genuinely necessary.

Example: Convert 7 feet to inches.

7 × 12 = 84 inches

Since 1 foot equals exactly 12 inches, this conversion factor is exact, meaning no rounding is ever required for whole-number foot values.

Feet to Inches Conversion Chart

The chart below shows every whole foot value from 1 to 100, converted to inches.

Feet	Inches	Feet	Inches
1 ft	12 in	51 ft	612 in
2 ft	24 in	52 ft	624 in
3 ft	36 in	53 ft	636 in
4 ft	48 in	54 ft	648 in
5 ft	60 in	55 ft	660 in
6 ft	72 in	56 ft	672 in
7 ft	84 in	57 ft	684 in
8 ft	96 in	58 ft	696 in
9 ft	108 in	59 ft	708 in
10 ft	120 in	60 ft	720 in
11 ft	132 in	61 ft	732 in
12 ft	144 in	62 ft	744 in
13 ft	156 in	63 ft	756 in
14 ft	168 in	64 ft	768 in
15 ft	180 in	65 ft	780 in
16 ft	192 in	66 ft	792 in
17 ft	204 in	67 ft	804 in
18 ft	216 in	68 ft	816 in
19 ft	228 in	69 ft	828 in
20 ft	240 in	70 ft	840 in
21 ft	252 in	71 ft	852 in
22 ft	264 in	72 ft	864 in
23 ft	276 in	73 ft	876 in
24 ft	288 in	74 ft	888 in
25 ft	300 in	75 ft	900 in
26 ft	312 in	76 ft	912 in
27 ft	324 in	77 ft	924 in
28 ft	336 in	78 ft	936 in
29 ft	348 in	79 ft	948 in
30 ft	360 in	80 ft	960 in
31 ft	372 in	81 ft	972 in
32 ft	384 in	82 ft	984 in
33 ft	396 in	83 ft	996 in
34 ft	408 in	84 ft	1,008 in
35 ft	420 in	85 ft	1,020 in
36 ft	432 in	86 ft	1,032 in
37 ft	444 in	87 ft	1,044 in
38 ft	456 in	88 ft	1,056 in
39 ft	468 in	89 ft	1,068 in
40 ft	480 in	90 ft	1,080 in
41 ft	492 in	91 ft	1,092 in
42 ft	504 in	92 ft	1,104 in
43 ft	516 in	93 ft	1,116 in
44 ft	528 in	94 ft	1,128 in
45 ft	540 in	95 ft	1,140 in
46 ft	552 in	96 ft	1,152 in
47 ft	564 in	97 ft	1,164 in
48 ft	576 in	98 ft	1,176 in
49 ft	588 in	99 ft	1,188 in
50 ft	600 in	100 ft	1,200 in

Quick Feet to Inches Conversion Chart

For fast reference, here are the most commonly searched foot-to-inch conversions:

Feet	Inches
1 ft	12 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
9 ft	108 in
10 ft	120 in
12 ft	144 in
15 ft	180 in
20 ft	240 in
25 ft	300 in
30 ft	360 in
40 ft	480 in
50 ft	600 in

Common Feet to Inches Conversions

1 Foot to Inches

1 × 12 = 12 inches

2 Feet to Inches

2 × 12 = 24 inches

3 Feet to Inches

3 × 12 = 36 inches

4 Feet to Inches

4 × 12 = 48 inches

5 Feet to Inches

5 × 12 = 60 inches

6 Feet to Inches

6 × 12 = 72 inches

10 Feet to Inches

10 × 12 = 120 inches

20 Feet to Inches

20 × 12 = 240 inches

Decimal Feet to Inches

Decimal feet values are converted using the same formula:

inches = decimal feet × 12

Decimal Feet	Inches
1.5 ft	18 in
2.5 ft	30 in
3.5 ft	42 in
4.25 ft	51 in
5.5 ft	66 in
6.25 ft	75 in
7.5 ft	90 in
10.5 ft	126 in

Example: Convert 4.25 feet to inches.

4.25 × 12 = 51 inches

It is important to understand that decimal feet are not the same as feet-and-inches notation, even when the results happen to line up in some cases. For example:

5.5 feet = 66 inches

And separately:

5 ft 6 in = 66 inches

These two values happen to be equivalent in this specific case because 0.5 of a foot equals exactly 6 inches (half of 12). This overlap can create confusion, since the two notations look similar but represent measurements in fundamentally different ways, one using a decimal fraction of a foot and the other using a separate, whole-number count of inches.

Feet and Inches Notation

Height and length measurements in the United States are frequently written using a combined feet-and-inches notation, such as:

5 ft 8 in

or in shorthand:

5′ 8″

In this notation:

• The first number represents feet.
• The second number represents inches.
• There are always 12 inches in each foot, so the inches portion should never exceed 11.

Examples of this notation include:

• 5 ft 8 in
• 6 ft 2 in
• 4 ft 11 in

Feet and Inches to Total Inches

To convert a measurement written in feet and inches into a single total-inches value, use the formula:

Total inches = (feet × 12) + remaining inches

Example: Convert 5 ft 8 in to total inches.

(5 × 12) + 8 = 60 + 8 = 68 inches

Additional examples:

6 ft 2 in: (6 × 12) + 2 = 72 + 2 = 74 inches

4 ft 9 in: (4 × 12) + 9 = 48 + 9 = 57 inches

7 ft 6 in: (7 × 12) + 6 = 84 + 6 = 90 inches

Human Height: Feet to Inches

Human height in the United States is very commonly expressed using feet and inches, such as:

• 5 ft 6 in
• 5 ft 8 in
• 6 ft 0 in
• 6 ft 2 in

Converting these measurements into total inches uses the same formula covered above: multiply the feet by 12, then add the remaining inches.

Height	Total Inches
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

This kind of conversion is especially useful for height charts, medical records, sizing guides, and any calculation that requires a single consistent unit rather than a mixed feet-and-inches value.

Feet to Inches for Construction and Dimensions

Construction and home improvement projects frequently require converting between feet and inches:

• Room dimensions
• Wall height
• Ceiling height
• Door height
• Lumber dimensions
• Furniture dimensions
• Building measurements
• Packaging dimensions

Example: A room is 12 ft long.

12 × 12 = 144 inches

Example: A wall is 8 ft high.

8 × 12 = 96 inches

Converting to inches is often useful when working with tools, materials, or specifications that are labeled in inches rather than feet, or when precise measurements smaller than a full foot need to be expressed clearly.

Feet to Inches for Product Dimensions

Manufacturers and retailers sometimes list product dimensions in feet, particularly for larger items. Common examples include:

• A 3 ft table
• A 6 ft ladder
• An 8 ft wall panel
• A 10 ft pipe

Converting these measurements to inches can be useful when comparing products listed in different units, working with smaller sub-measurements, or fitting an item into a space measured in inches.

Fractional Feet to Inches

Feet measurements are sometimes written using fractions rather than decimals. Common examples include:

• 1 1/2 ft
• 2 1/4 ft
• 3 3/4 ft
• 5 1/2 ft

To convert a fractional foot measurement, first express the fraction as a decimal, then apply the standard formula.

Example: Convert 1 1/2 ft to inches.

1 1/2 ft = 1.5 ft 1.5 × 12 = 18 inches

Example: Convert 2 1/4 ft to inches.

2 1/4 ft = 2.25 ft 2.25 × 12 = 27 inches

The fraction represents a portion of a single foot, so converting it to a decimal first makes the multiplication straightforward.

Feet to Inches Conversion With Mixed Measurements

Mixed measurements, such as 7 ft 4 in, combine a whole number of feet with an additional number of inches. The formula remains the same as covered earlier:

(feet × 12) + inches = total inches

Example: Convert 7 ft 4 in to total inches.

(7 × 12) + 4 = 84 + 4 = 88 inches

Additional examples:

3 ft 6 in: (3 × 12) + 6 = 36 + 6 = 42 inches

4 ft 8 in: (4 × 12) + 8 = 48 + 8 = 56 inches

5 ft 10 in: (5 × 12) + 10 = 60 + 10 = 70 inches

6 ft 3 in: (6 × 12) + 3 = 72 + 3 = 75 inches

8 ft 5 in: (8 × 12) + 5 = 96 + 5 = 101 inches

Inches to Feet Reverse Conversion

For quick reference, converting inches back to feet uses the formula:

feet = inches ÷ 12

Example: Convert 24 inches to feet.

24 ÷ 12 = 2 feet

Example: Convert 60 inches to feet.

60 ÷ 12 = 5 feet

Example: Convert 72 inches to feet.

72 ÷ 12 = 6 feet

If the result is not a whole number, the remainder can be expressed as additional inches.

Example: Convert 68 inches to feet and inches.

68 ÷ 12 = 5 feet, with a remainder of 8 inches

Therefore:

68 inches = 5 ft 8 in

Feet vs Inches

Feature	Foot	Inch
Symbol	ft	in
Relationship	1 ft = 12 in	1 in = 1/12 ft
Relative size	Larger unit	Smaller unit
Common uses	Height, room dimensions, construction	Smaller dimensions, detailed measurements

Both feet and inches are units of length within the US customary system, and are also used in the Imperial system. They are simply scaled differently, with the foot serving as a more convenient unit for larger measurements and the inch offering more precision for smaller ones.

Feet, Inches, and Centimeters

Feet and inches also relate directly to the metric system through the following exact relationships:

• 1 foot = 12 inches
• 1 inch = 2.54 cm exactly

Combining these gives:

• 1 foot = 30.48 cm exactly

Example: Convert 5 feet to centimeters.

5 ft = 60 in = 152.4 cm

Example: Convert 6 feet to centimeters.

6 ft = 72 in = 182.88 cm

Converting between feet, inches, and centimeters is common when working with international measurements, comparing product specifications, or converting height between US and metric conventions.

Feet to Inches and Decimal Feet

One of the most important distinctions to understand is the difference between decimal feet and feet-and-inches notation. These are not the same thing, even though they can look similar at a glance.

Consider:

5.5 ft

versus:

5 ft 5 in

These are NOT the same measurement.

5.5 ft = 66 inches = 5 ft 6 in

5 ft 5 in = 65 inches

The decimal portion of a foot value must be multiplied by 12 to determine its equivalent in inches. In the case of 5.5 ft, the 0.5 represents half of a foot, which equals 6 inches, not 5 inches. This is why 5.5 ft converts to 5 ft 6 in, not 5 ft 5 in. Confusing these two notations is one of the most common sources of measurement errors.

Feet to Inches Conversion Examples

Example 1

Convert 3 feet to inches.

3 × 12 = 36 inches

Example 2

Convert 5 feet to inches.

5 × 12 = 60 inches

Example 3

Convert 8 feet to inches.

8 × 12 = 96 inches

Example 4

Convert 12 feet to inches.

12 × 12 = 144 inches

Example 5

Convert 2.5 feet to inches.

2.5 × 12 = 30 inches

Example 6

Convert 4.25 feet to inches.

4.25 × 12 = 51 inches

Example 7

Convert 5 ft 8 in to total inches.

(5 × 12) + 8 = 68 inches

Example 8

Convert 6 ft 2 in to total inches.

(6 × 12) + 2 = 74 inches

Example 9

Convert 10.5 feet to inches.

10.5 × 12 = 126 inches

Example 10

Convert 15 feet to inches.

15 × 12 = 180 inches

Common Feet to Inches Conversion Mistakes

• Using 10 instead of 12 as the conversion factor. Feet convert to inches using a factor of 12, not 10, since a foot contains 12 inches.
• Dividing instead of multiplying. Converting feet to inches requires multiplication. Division is used for the reverse conversion, from inches to feet.
• Confusing feet with inches. These are different units of significantly different size, and mixing them up leads to major errors.
• Confusing decimal feet with feet-and-inches. A value like 5.5 ft does not mean “5 feet 5 inches”; it means 5 feet plus half a foot, which equals 5 feet 6 inches.
• Treating 5.5 feet as 5 feet 5 inches. As shown above, this is incorrect. 5.5 feet equals 66 inches, while 5 ft 5 in equals only 65 inches.
• Forgetting the remaining inches in mixed measurements. When converting a measurement like 6 ft 3 in, both the feet and the additional inches must be included in the total.
• Forgetting units. A number without “inches” or “feet” attached is incomplete and can cause confusion.
• Rounding unnecessarily. Since 1 foot equals exactly 12 inches, whole-number foot conversions never require rounding.
• Confusing foot and feet terminology. “Foot” is singular, and “feet” is plural, though both use the same abbreviation, “ft.”
• Using the wrong notation. Mixing up decimal notation (5.5 ft) with feet-and-inches notation (5 ft 6 in) without converting correctly can lead to measurement errors.

Common Questions About Feet to Inches

Final Thoughts

Converting feet to inches comes down to one simple, exact rule: multiply the number of feet by 12. Whether working with whole numbers, decimals, fractions, or mixed feet-and-inches measurements, this same principle applies consistently. Understanding the important distinction between decimal feet and feet-and-inches notation helps avoid one of the most common measurement mistakes.