Convert Square Kilometers to Square Millimeters

Enter your square kilometer value in the form below to get the value calculated in square millimeters.

Results in Square Millimeters:

1 sq km = 1,000,000,000,000 sq mm

How to Convert Square Kilometers to Square Millimeters

Calculators can be used to convert measurements from one unit to another

Save Share Tweet

Convert square kilometers to square millimeters with this simple formula:

square millimeters = square kilometers × 1,000,000,000,000

Converting a square kilometer area measurement to a square millimeter measurement involves multiplying the area by the conversion ratio to find the result. One square kilometer is equal to 1,000,000,000,000 square millimeters, so to convert simply multiply by 1,000,000,000,000.

For example, here's how to convert 5 square kilometers to square millimeters using the formula above.

5 sq km = (5 × 1,000,000,000,000) = 5,000,000,000,000 sq mm

Learn more about finding the area of your space using our area calculator.

Square kilometers and square millimeters are both units used to measure area. Learn more about area and find more area measurement conversion calculators. Square kilometers are a metric measurement and can be abbreviated as sq km, for example 1 sq km. Square millimeters are a metric measurement and can be abbreviated as sq mm, for example 1 sq mm. Learn more about the metric system, including the common unit prefixes and how to convert between metric units.

square kilometers and square millimeters are units used to measure area

Convert Square Millimeters to Square Kilometers

Square Kilometer Measurements and Equivalent Square Millimeter Conversions

Common square kilometer values converted to the equivalent square millimeter value
Square Kilometers	Square Millimeters
1 sq km	1,000,000,000,000 sq mm
2 sq km	2,000,000,000,000 sq mm
3 sq km	3,000,000,000,000 sq mm
4 sq km	4,000,000,000,000 sq mm
5 sq km	5,000,000,000,000 sq mm
6 sq km	6,000,000,000,000 sq mm
7 sq km	7,000,000,000,000 sq mm
8 sq km	8,000,000,000,000 sq mm
9 sq km	9,000,000,000,000 sq mm
10 sq km	10,000,000,000,000 sq mm
11 sq km	11,000,000,000,000 sq mm
12 sq km	12,000,000,000,000 sq mm
13 sq km	13,000,000,000,000 sq mm
14 sq km	14,000,000,000,000 sq mm
15 sq km	15,000,000,000,000 sq mm
16 sq km	16,000,000,000,000 sq mm
17 sq km	17,000,000,000,000 sq mm
18 sq km	18,000,000,000,000 sq mm
19 sq km	19,000,000,000,000 sq mm
20 sq km	20,000,000,000,000 sq mm
21 sq km	21,000,000,000,000 sq mm
22 sq km	22,000,000,000,000 sq mm
23 sq km	23,000,000,000,000 sq mm
24 sq km	24,000,000,000,000 sq mm
25 sq km	25,000,000,000,000 sq mm
26 sq km	26,000,000,000,000 sq mm
27 sq km	27,000,000,000,000 sq mm
28 sq km	28,000,000,000,000 sq mm
29 sq km	29,000,000,000,000 sq mm
30 sq km	30,000,000,000,000 sq mm
31 sq km	31,000,000,000,000 sq mm
32 sq km	32,000,000,000,000 sq mm
33 sq km	33,000,000,000,000 sq mm
34 sq km	34,000,000,000,000 sq mm
35 sq km	35,000,000,000,000 sq mm
36 sq km	36,000,000,000,000 sq mm
37 sq km	37,000,000,000,000 sq mm
38 sq km	38,000,000,000,000 sq mm
39 sq km	39,000,000,000,000 sq mm
40 sq km	40,000,000,000,000 sq mm

More Square Kilometer Area Conversions

US Customary

Convert to Square Miles: 1 sq km is equal to 0.386102 square miles
Convert to Acres: 1 sq km is equal to 247.105381 acres
Convert to Square Yards: 1 sq km is equal to 1,195,990 square yards
Convert to Square Feet: 1 sq km is equal to 10,763,910.4 square feet
Convert to Square Inches: 1 sq km is equal to 1,550,003,100 square inches

SI Units

Convert to Square Meters: 1 sq km is equal to 1,000,000 square meters
Convert to Square Centimeters: 1 sq km is equal to 10,000,000,000 square centimeters

Are Units