Convert Kilometers to Millimeters
Enter your kilometer value in the form below to get the value calculated in millimeters.
How to Convert Kilometers to Millimeters Using an Easy Conversion Formula
Converting a kilometer length measurement to a millimeter measurement involves multiplying your length by the conversion ratio to find the result. A kilometer is equal to 1000000 millimeters, so to convert simply multiply by 1000000.
Our inch fraction calculator can add kilometers and millimeters together and it also automatically converts the results to both imperial and metric values.
Kilometers and millimeters are both units used to measure length. Learn more about length and find more length measurement conversion calculators. A kilometer is a metric measurement and can be abbreviated as km, for example 1km. A millimeter is a metric measurement and can be abbreviated as mm, for example 1mm. Learn more about the metric system, including the common unit prefixes and how to convert between metric units.
Millimeter is spelled millimetre internationally, and it is equal in length to .1 centimeters, 1000 micrometers, or 5/127 inch. They are represented by the smallest ticks on most metric rulers. To get a reference point of the size, the thickness of a dime is 1.35mm.
We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. Rulers are available in imperial, metric, or combination with both values, so make sure you get the correct type for your needs. If you need a ruler you can also download and print our free printable rulers which include both imperial and metric measurements.
Kilometer Measurements and Equivalent Millimeter Conversions
More Length Conversions
- Convert to Miles Length
- 1km is equal to 0.621371 miles
- Convert to Yards Length
- 1km is equal to 1,094 yards
- Convert to Feet Length
- 1km is equal to 3,281 feet
- Convert to Inches Length
- 1km is equal to 39,370 inches
- Convert to Meters Length
- 1km is equal to 1,000 meters
- Convert to Centimeters Length
- 1km is equal to 100,000 centimeters
- Convert to Micrometers Length
- 1km is equal to 1,000,000,000 micrometers
- Convert to Nanometers Length
- 1km is equal to 1,000,000,000,000 nanometers