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

Convert Square Millimeters to Square Kilometers

Convert from square millimeters to square kilometers with this simple formula:
square kilometers = square millimeters × 1.0E-12
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1 Square Millimeter = 1.0E-12 Square Kilometers

Learn How to Convert Square Millimeters to Square Kilometers Using our Conversion Formula

Converting a square millimeter area measurement to a square kilometer measurement involves multiplying your area by the conversion ratio to find the result. A square millimeter is equal to 1.0E-12 square kilometers, so to convert simply multiply by 1.0E-12.

For example, 5sq mm = (5 × 1.0E-12) = 5.0E-12sq km.

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

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

square millimeters and square kilometers are units used to measure area
Convert Square Kilometers to Square Millimeters

More Area Conversions

Convert to Acres Area
1sq mm is equal to 2.4711E-10 acres
Convert to Square Miles Area
1sq mm is equal to 3.861E-13 square miles
Convert to Square Yards Area
1sq mm is equal to 1.196E-6 square yards
Convert to Square Feet Area
1sq mm is equal to 1.0764E-5 square feet
Convert to Square Inches Area
1sq mm is equal to 0.00155 square inches
Convert to Square Meters Area
1sq mm is equal to 1.0E-6 square meters
Convert to Square Centimeters Area
1sq mm is equal to 0.01 square centimeters

Square Millimeter Measurements and Equivalent Square Kilometer Conversions

Common square millimeter values converted to the equivalent square kilometer value
Square Millimeters Square Kilometers Square Millimeters Square Kilometers Square Millimeters Square Kilometers
1 0.0000000000010 21 0.000000000021 41 0.000000000041
2 0.0000000000020 22 0.000000000022 42 0.000000000042
3 0.0000000000030 23 0.000000000023 43 0.000000000043
4 0.0000000000040 24 0.000000000024 44 0.000000000044
5 0.0000000000050 25 0.000000000025 45 0.000000000045
6 0.0000000000060 26 0.000000000026 46 0.000000000046
7 0.0000000000070 27 0.000000000027 47 0.000000000047
8 0.0000000000080 28 0.000000000028 48 0.000000000048
9 0.0000000000090 29 0.000000000029 49 0.000000000049
10 0.000000000010 30 0.000000000030 50 0.000000000050
11 0.000000000011 31 0.000000000031 51 0.000000000051
12 0.000000000012 32 0.000000000032 52 0.000000000052
13 0.000000000013 33 0.000000000033 53 0.000000000053
14 0.000000000014 34 0.000000000034 54 0.000000000054
15 0.000000000015 35 0.000000000035 55 0.000000000055
16 0.000000000016 36 0.000000000036 56 0.000000000056
17 0.000000000017 37 0.000000000037 57 0.000000000057
18 0.000000000018 38 0.000000000038 58 0.000000000058
19 0.000000000019 39 0.000000000039 59 0.000000000059
20 0.000000000020 40 0.000000000040 60 0.000000000060