How to Convert Feet to Inches: Formula, Conversion, Examples, FAQs

What Is the Feet to Inches Conversion?

Feet to inches conversion is used for converting a length measurement in feet into an equivalent measurement in inches. It is done by multiplying the given length in feet by 12.

There are 12 inches in one foot. 

1 foot = 12 inches

A foot (abbreviation: ft, symbol: ‘ ) is a customary unit to measure the length or distance. “Foot” refers to a single unit of measurement whereas “feet” is its plural form. 

Example: 2 feet = 2 ft = 2‘

An inch (The abbreviation: in, symbol: “ ) can be defined as a unit of length in the customary system of measurement. The inch is commonly used in the United States and a few other countries.

Example: 5 inch = 5 in = 5“

Feet to Inches Conversion Formula

1 foot = 12 inches

Thus, n feet = (n $\times$12) inches

To convert feet to inches, simply multiply the length in feet by 12.

The formula to convert feet to inches (ft. to in.) is as follows:

Length in inches = Length in feet $\times$ 12

Example: Convert 10 feet to inches.

Inches = Feet $\times$ 12

Thus, 10 feet = 10 $\times$ 12 = 120 inches

How to Convert Feet to Inches

Step 1: Note down the given length in feet.

Step 2: Multiply the number of feet by 12, as there are 12 inches in one foot.

Step 3: The result will be the equivalent length in inches. 

Example: Convert 8 feet to inches. 

To convert 8 feet to inches, multiply the number of feet (8) by the conversion factor (12).

Length in inches = 8 $\times$ 12 = 96 inches

Therefore, 8 feet = 96 inches.

Feet to Inches Chart

Feet	Inches
1′	12″
2′	24″
3′	36″
4′	48″
5′	60″
6′	72″
7′	84″
8′	96″
9′	108″
10′	120″

You can use this chart as a reference to quickly convert different lengths from feet to inches. Simply multiply the number of feet by 12 to get the equivalent length in inches.

Facts on Feet to Inches

Conclusion

In this article, we have learned about feet, inches, and the conversion of feet to inches. Converting feet to inches is useful when you want to express a measurement in a smaller unit within the same system, or when you need to communicate the measurement in a context that primarily uses inches. Now let’s solve some examples and practice problems to understand the concept better.

Solved Examples on Feet to Inches

1. Convert 7 feet and 6 inches to inches.

Solution: 

To convert feet to inches, we multiply the number of feet by 12. Here, we will first convert 7 feet to inches and then we will add 6 inches to the result.

7 feet $\time$ 12 inches = 84 inches.

84 inches + 6 inches = 90 inches.

Therefore, 7 feet and 6 inches is equal to 90 inches.

2. A rope is 15 feet long. How many inches long is the rope?

Solution:

To convert feet to inches, we multiply the number of feet by 12.

So, 15 feet $\times$ 12 = 180 inches.

Therefore, the rope is 180 inches long.

3. A person’s height is 5 feet 9 inches. How many inches tall is the person?

Solution:

To convert 5 feet to inches, we multiply 5 by 12. 

5 feet $\times$ 12 inches = 60 inches.

5 feet 9 inches = 60 inches + 9 inches = 69 inches.

Therefore, the person is 69 inches tall.

4. Sara is 4 feet tall. Jeffrey is 42 inches tall. Who is taller?

Solution:

We cannot compare two heights with different units.

Let’s first convert 4 feet into inches.

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

4 feet $\times$ 12 = 48 inches.

Here, 42 inches < 48 inches

Sara’s height is greater than Jeffrey’s height.

Thus, Sara is taller than Jeffrey.

5. A wall is 120 feet tall. If a ladder can reach up to 20 feet, how many inches short is the ladder?

Solution:

Height of the wall = 120 feet.

Ladder reaches up to 20 feet.

Shortage in feet = 120 feet – 20 feet = 100 feet.

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

Thus, shortage in inches = 100 $\times$ 12 

                                         = 1200

Therefore, the ladder is 1200 inches short of reaching the top of the building.

Practice Problems on Feet to Inches

Frequently Asked Questions on Feet to Inches