Cubic inches to Cubic centimeters Converter

Cubic inches (in³). A cubic inch is 16.387064 milliliters. It is used for engine displacement in the United States and for small volumes in imperial engineering.

Cubic centimeters (cm³). A cubic centimeter equals one milliliter exactly. It is used for engine displacement, medicine doses and small solid volumes — a 1,500 cc engine displaces 1,500 of them.

US and imperial units are kept separate because they are genuinely different sizes. Confirm which system a source means before trusting a converted figure.

The metric volume units are a clean decimal chain around the liter, so liters to milliliters is a shift of three places and cubic meters to liters is a shift of three the other way. Those pairs a reader can do without a converter.

Every pair that names a US or imperial liquid unit has to go through the definition first, because three of these units differ from a metric unit by amounts too large to round away: a liter is not a quart, a gallon is 3.785411784 liters in the US system and 4.54609 in the imperial one, and a US fluid ounce is not an imperial fluid ounce.

When checking a volume conversion, convert into liters and out again, or measure the container. The mistake that survives every other check is reading a US measure as the imperial unit of the same name, which changes a recipe, a fuel figure or a tank size by about a fifth.