Science, Tech, Math › Science How to Convert Feet to Kilometers - Example Problem Share Flipboard Email Print Huntstock, Getty Images Science Chemistry Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated November 05, 2019 This example problem demonstrates how to convert feet to kilometers. Feet to Kilometers Conversion Problem The average commercial jet flies around an altitude of 32,500 feet. How high is this in kilometers? Conversion Solution 1 foot = 0.3048 meters1000 m = 1 kmSet up the conversion to the desired unit will be canceled out. In this case, we want km to be the remaining unit.distance in km = (distance in ft) x (0.3048 m/1 ft) x (1 km/1000 m)distance in km = (32500 x 0.3048/1000) kmdistance in km = 9.906 km Answer 32,500 feet is equal to 9.906 kilometers.Many conversion factors are difficult to remember. Feet to meters would fall into this category. An alternate method to perform this conversion is to use multiple easily remembered steps.1 foot = 12 inches1 inch = 2.54 centimeters100 centimeters = 1 meterUsing these steps we can express a distance in meters from feet as:distance in m = (distance in ft) x (12 in/1 ft) x (2.54 cm/1 in) x (1 m/100 cm)distance in m = (distance in ft) x 0.3048 m/ftNote this gives the same conversion factor as above. The only thing to watch out for is for the intermediate units to cancel out. Check Your Work It's always good practice to check your answer to make certain it makes sense. A value in feet should equal a much lower value in kilometers. This is because there is more than one foot in a meter and a thousand meters in a kilometer.