Converting Cubic Inches to Liters (in³ to L) is most commonly associated with automotive history. While modern engines are measured in Liters (e.g., a 2.0L engine), classic American muscle cars were defined by cubic inches (e.g., a 426 Hemi). 1 Cubic Inch is equal to approximately 0.0164 Liters. This conversion is the bridge between the golden era of American hot rods and modern metric engine standards.
Master Volume Converter
The Formula
Multiply the Cubic Inches by approximately 0.0164:
in³ × 0.0164 = Liters
Example
You are looking at a classic “350” V8 engine (350 cubic inches):
350 × 0.0164 = 5.74 Liters (The famous 5.7L V8)
Automotive & Fluid Volume Insights
Think of a liter as a standard bottle of water. To fill that bottle using cubic inches, you would need about 61 small 1-inch cubes. This is why classic “350” engines are often called 5.7-liter engines.
Frequently Asked Questions
One cubic inch is equivalent to exactly 0.016387064 liters. Because a liter is a much larger unit of volume, the result in liters will always be a very small decimal compared to the starting number in cubic inches.
Before the 1980s, American car manufacturers measured engine size in cubic inches (like the Ford 302 or Chevy 350). Today, almost all manufacturers use liters. This tool helps enthusiasts convert those classic measurements into modern metric standards.
If you don’t have a calculator, dividing your cubic inches by 60 will give you a very close “ballpark” figure. For instance, if you have 120 cubic inches, dividing by 60 gives you roughly 2 liters. The actual answer is 1.96, so the estimate is quite accurate for quick conversations.