1. The conversion relationship between square kilometers and square meters is that 1 square kilometer is equal to 1,000,000 square meters. 2. The conversion method can be determined through memorization or mathematical calculation. It can be remembered that each unit of area has a specific conversion relationship, or it can be calculated by determining the area of a square with a side length of 1 kilometer. 3. The area of a square with a side length of 1 kilometer is calculated as follows: 1 kilometer × 1 kilometer = 1,000 meters × 1,000 meters = 1,000,000 square meters. 4. In daily life, square meters are often abbreviated as "ping m" or "square," while square kilometers are represented by the symbol km². 5. Conversion relationships for square meters with other units of area are as follows: - 1 square meter = 100 square decimeters = 10,000 square centimeters = 100,000 square millimeters. - 1 hectare = 0.0001 square kilometers. - 1 square kilometer = 0.000001 square kilometers. - 1 public meter = 0.0002471054 acres. - 1 square meter = 0.0000003861 square miles. - 1 square meter = 10.763910417 square feet. - 1 square meter = 0.0015 mu. 6. When converting units, it is important to consider both the conversion of the numerical value and the conversion of the unit. For example, when converting square meters to square decimeters, the numerical value needs to be multiplied by 100 (as the conversion rate between each adjacent level of units is 100).