Convert Square Millimeters to Square Kilometers

Enter your square millimeter value in the form below to get the value calculated in square kilometers.

Results in Square Kilometers:

1 sq mm = 1.0E-12 sq km

How to Convert Square Millimeters to Square Kilometers Using an Easy Conversion Formula

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

Save Share Tweet

Convert square millimeters to square kilometers with this simple formula:

square kilometers = square millimeters × 1.0E-12

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

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

More Area Conversions

Convert to Square Miles Area: 1sq mm is equal to 3.861E-13 square miles
Convert to Acres Area: 1sq mm is equal to 2.4711E-10 acres
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 Hectares Area: 1sq mm is equal to 1.0E-10 hectares
Convert to Ares Area: 1sq mm is equal to 1.0E-8 ares
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