How many millimeters are in a km
There are 1,000,000 millimeters in a kilometer.
To convert kilometers to millimeters, you need to multiply the value in kilometers by 1 million. Since there are 1,000 meters in a kilometer and 1,000 millimeters in a meter. Here is the step-by-step calculation:
1 kilometer = 1,000 meters (by definition)
1 meter = 1,000 millimeters (by definition)
Therefore, we have:
1 kilometer = 1,000 meters * 1,000 millimeters/meter
Multiply the above values:
1 kilometer = 1,000,000 millimeters
So, there are 1,000,000 millimeters in a kilometer.