# Convert Kilometer Square to Millimeter Square (km2 to mm2)

In next fields, kindly type your value in the text box under title [ From: ] to convert from kilometer square to millimeter square (km2 to mm2). As you type your value, the answer will be automatically calculated and displayed in the text box under title [ To: ].

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Kilometer Square (abbreviation: km2): is the SI derived unit of area. It is the area of a square whose sides measure exactly one kilometre. The square metre 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 * 1000 of a second.

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.

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## How to Convert Kilometers Square to Millimeters Square

### Example: How many millimeters square are equivalent to 66.99 kilometers square?

As;

1 kilometers square = 1000000000000 millimeters square

66.99 kilometers square = Y millimeters square

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

Y equals 66.99 times 1000000000000 over 1

(i.e.) Y = 66.99 * 1000000000000 / 1 = 66990000000000 millimeters square

Answer is: 66990000000000 millimeters square are equivalent to 66.99 kilometers 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 ) 57.5 km2

( ii ) 96.94 km2

( iii ) 2.4 km2

References
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