Science, Tech, Math › Science Converting Cubic Inches to Liters Unit Conversion Example Worked Problem Share Flipboard Email Print Engine displacement may be given in cubic inches or cubic centimeters. Car Culture / 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 January 13, 2019 This example problem demonstrates how to convert cubic inches to liters, using the real-life scenario of engine displacement, which is the combined swept displacement of all of the machine's pistons in their cylinders. When someone describes the power of a car, that person might say that it has a 3.3-liter engine or some such example. Problem Many small car engines have an engine displacement of 151 cubic inches. What is this volume in liters? Working the Solution 1 inch = 2.54 centimeters First, convert the measurements to cubic measurements. (1 inch)3 = (2.54 cm)3 1 in3 = 16.387 cm3 Second, convert to cubic centimeters. Set up the conversion so that the desired unit will be canceled out. In this case, we want cubic centimeters to be the remaining unit. volume in cm3 = (volume in in3) x (16.387 cm3/1 in3) volume in cm3 = (151 x 16.387) cm3 volume in cm3 = 2,474.45 cm3 Third, convert to liters. 1 L = 1,000 cm3 Set up the conversion so that the desired unit will be canceled out. In this case, we want liters to be the remaining unit. volume in L = (volume in cm3) x (1 L/1,000 cm3) volume in L = (2,474.45/1,000) L volume in L = 2.474 L Answer A 151–cubic inch engine displaces 2.474 liters of space (or air).