The area of 20 feet squared is 400 square feet.
Since feet are a linear measurement, converting feet to square involves squaring the length value. So, 20 feet in square equals 20 times 20, which results in 400 square feet, representing the space that covers a square with sides of 20 feet.
Conversion Result
20 feet is equal to 400 square feet.
Conversion Tool
Result in square:
Conversion Formula
The formula to convert feet to square feet is simple: multiply the length in feet by itself. This works because area of a square is calculated by side length times side length. For example, if the length is 20 feet, then area equals 20 x 20, which equals 400 square feet.
Conversion Example
- Convert 10 feet to square: 10 x 10 = 100 square feet.
- Convert 15 feet to square: 15 x 15 = 225 square feet.
- Convert 8 feet to square: 8 x 8 = 64 square feet.
- Convert 25 feet to square: 25 x 25 = 625 square feet.
- Convert 50 feet to square: 50 x 50 = 2500 square feet.
Steps:
- Take the number of feet (for example, 15).
- Multiply 15 by itself: 15 x 15.
- Get the result: 225 square feet.
- This gives the area of a square with sides of that length.
Conversion Chart
| Feet | Square Feet |
|---|---|
| -5.0 | 25.0000 |
| -4.0 | 16.0000 |
| -3.0 | 9.0000 |
| -2.0 | 4.0000 |
| -1.0 | 1.0000 |
| 0 | 0.0000 |
| 1.0 | 1.0000 |
| 2.0 | 4.0000 |
| 3.0 | 9.0000 |
| 4.0 | 16.0000 |
| 5.0 | 25.0000 |
| 10.0 | 100.0000 |
| 15.0 | 225.0000 |
| 20.0 | 400.0000 |
| 25.0 | 625.0000 |
| 30.0 | 900.0000 |
| 35.0 | 1225.0000 |
| 40.0 | 1600.0000 |
| 45.0 | 2025.0000 |
This chart shows how each feet value converts into square feet, by squaring the number in feet. Use it to estimate area quickly without calculator for specific values.
Related Conversion Questions
- How many square feet are in 20 feet of length if I want to find the area of a square?
- What is the square footage of a room that measures 20 feet by 20 feet?
- How do I convert 20 feet into the total square feet for flooring?
- If I have a 20-foot side, what is the total area in square feet?
- Can I quickly estimate the area of a space that is 20 feet long using a calculator?
- Is the conversion from feet to square feet the same for any measurement length?
- What is the formula to find the square footage of a space with a side of 20 feet?
Conversion Definitions
Feet
Feet are a unit of linear measurement used primarily in the United States to measure length or distance, equal to 12 inches, and used to determine size and dimensions of objects or spaces in construction and daily life.
Square
Square refers to a measure of area representing a shape with four equal sides and right angles, calculated by multiplying the length of one side by itself, as in square feet, square meters, or other units of area.
Conversion FAQs
How does the area change if I double the feet measurement?
Doubling the linear measurement in feet results in quadrupling the area in square feet because the area is proportional to the square of the length. For example, increasing from 20 to 40 feet yields an area increase from 400 to 1600 square feet.
Can I convert fractional feet to square feet using this method?
Yes, by entering fractional or decimal feet into the input box, the conversion tool calculates the square by multiplying the decimal value by itself, providing accurate square footage for measurements like 2.5 feet or 3.75 feet.
Why does squaring the feet give the square feet?
This is because area is a two-dimensional measurement. When you square a linear measurement like feet, you account for both length and width, resulting in square feet which quantify the space covered by a surface.
Is this conversion only valid for square shapes?
No, the conversion from feet to square feet applies to any surface that can be approximated or measured as a square or rectangle, by multiplying the length and width in feet. For irregular shapes, additional calculations are needed.
What if I need to convert cubic feet instead of square feet?
Converting to cubic feet involves measuring volume, which requires three dimensions: length, width, and height. Multiplying these three measurements gives the volume in cubic feet, different from the area calculation shown here.