Calculate cubic inches to liters instantly, and convert liters back to cubic inches, with milliliter, cubic centimeter, and US gallon equivalents.
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Cubic Inches to Liters Formula
To convert a volume from cubic inches to liters, multiply the cubic inches by 0.016387064. To go the other way, multiply liters by 61.0237.
L = in³ * 0.016387064
in³ = L * 61.0237440947
- L is the volume in liters.
- in³ is the volume in cubic inches.
- 0.016387064 is the number of liters in one cubic inch.
- 61.0237440947 is the number of cubic inches in one liter.
One cubic inch equals 16.387064 milliliters, which is the same as 16.387064 cubic centimeters. The two formulas are inverses of each other, so dividing by 61.0237 gives the same result as multiplying by 0.016387064. The converter also reports milliliters, cubic centimeters, and US gallons so you can read the volume in the unit you need. Pick the direction at the top of the calculator, enter your value, and the result panel updates with every equivalent.
Common Cubic Inch and Liter Values
The table below lists cubic inch volumes that come up often, including engine displacements, with their rounded liter equivalents.
| Cubic Inches (in³) | Liters (L) | Common Reference |
|---|---|---|
| 61 | 1.00 | About one liter |
| 122 | 2.0 | Small four cylinder engine |
| 231 | 3.79 | One US gallon |
| 305 | 5.0 | 5.0L V8 |
| 350 | 5.74 | 350 cu in small block |
| 454 | 7.44 | 454 big block |
Example Problems
Example 1. An engine is rated at 350 cubic inches. Convert it to liters. Multiply 350 by 0.016387064 to get 5.7354724, which rounds to 5.74 liters. This is why a 350 cubic inch engine is sold as a 5.7L.
Example 2. A container holds 5 liters. Convert it to cubic inches. Multiply 5 by 61.0237440947 to get 305.12 cubic inches.
FAQ
How many liters are in a cubic inch?
One cubic inch is equal to 0.016387064 liters. A liter is much larger, holding about 61.02 cubic inches.
Why is a 350 cubic inch engine called a 5.7 liter?
Converting 350 cubic inches gives 5.735 liters, which manufacturers round to 5.7 liters for the metric badge. The displacement is the same volume expressed in different units.
Is a cubic centimeter the same as a milliliter when converting?
Yes. One cubic centimeter equals exactly one milliliter, so one cubic inch is 16.387064 of either. There are 1000 of them in a single liter.
