**Definitions:**

**Foot Square** (abbreviations: **ft2, or sf, or sq ft**): (plural square feet) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area.

**Millimeter Square** (abbreviation: **mm2**): is the SI derived unit of area. It is the area of a square whose sides measure exactly one millimeter. The square millimeter is derived from the SI base unit of the metre, which itself is the length of the path travelled by light in absolute vacuum within time interval of 1/299,792,458 * 1/1000 of a second.

## How to Convert Feet Square to Millimeters Square

*Example: How many millimeters square are equivalent to 11.1 feet square?*

As;

1 feet square = 92903 millimeters square

11.1 feet square = Y millimeters square

Assuming Y is the answer, and by criss-cross principle;

Y equals 11.1 times 92903 over 1

(i.e.) Y = 11.1 * 92903 / 1 = 1031223.3 millimeters square

Answer is: 1031223.3 millimeters square are equivalent to 11.1 feet square.

*Practice Question: Convert the following units into mm2:*

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 1.98 ft2

( ii ) 17.3 ft2

( iii ) 56.76 ft2