A cubic inches calculator computes volume in cubic inches (in³) and converts to liters, cubic feet, milliliters, gallons, and 25+ other units. Used for engine displacement, shipping, and manufacturing.
A cubic inch (in³) is the volume of a cube with 1-inch sides. It is commonly used in the US for engine displacement, shipping dimensional weight, and small container volumes.
1 cubic inch = 16.387 mL = 0.01639 liters = 0.000579 cubic feet = 0.554 US fluid ounces.
V (in³) = Length (in) × Width (in) × Height (in).
To convert inches to cubic feet: divide by 1,728. To liters: multiply by 0.01639.
Example: A box 12" × 8" × 6" = 576 in³ = 0.333 ft³ = 9.44 L = 2.49 gal.
350 in³ = 5,735 mL = 5.74 liters (commonly called a "5.7L V8").
= 1,728 in³ = 28.317 L = 7.481 gal.
≈ 21.7 in³ = 355 mL.
= 2,160 in³ = 1.25 ft³ = 35.4 L.
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Answers to common questions about the cubic inches calculator.
1 liter = 61.024 cubic inches. 1 in³ = 0.01639 L = 16.387 mL. Engine displacement: divide in³ by 61.024 to get liters.
Divide cubic inches by 61.024. A 302 in³ engine = 302/61.024 = 4.95 L (the "5.0L" Ford). A 454 in³ = 7.44 L. A 350 in³ = 5.74 L.
1,728 cubic inches = 1 cubic foot (12 × 12 × 12 = 1,728). Divide in³ by 1,728 to get ft³.
Dimensional weight (lbs) = L × W × H (inches) ÷ dim factor. UPS/FedEx domestic: ÷139. International: ÷166. USPS: ÷166.
1 in³ = 0.5541 US fluid ounces. Or: 1 US fl oz = 1.805 in³.