Cylinder Volume Calculator in Cubic Inches
Calculate cylinder volume in cubic inches using V = pi r squared h. For a cylinder with radius 3 in and height 8 in, multiplying pi times 9 times 8 gives 226.19 cu in, which equals 0.979 US gallons or 3.707 litres. Enter your dimensions in inches below to calculate cubic inch volume.
Calculator
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Small component and mechanical volume
This tool computes cylinder volume in cubic inches. It is used in machine work, engine sizing, and fabrication.
Cubic inch displacement and engine calculations
With radius and height in inches, the formula is V = pi r squared h. To convert cubic inches to US gallons, divide by 231.
Frequently Asked Questions
How do you manually calculate volume in cubic inches?
Ensure your tape measure readings are strictly in inches. Then simply multiply Pi (3.14159) × Radius² × Height. The direct result of that multiplication is your total cubic inches.
How many cubic inches are in a US gallon?
By mathematical definition, exactly 231 cubic inches of liquid space equals 1 US liquid gallon. This is a vital baseline for fluid dispensing mechanics.
How do I convert between cubic inches and cubic feet?
A foot has 12 inches, so a cubic foot is 12×12×12. That means there are exactly 1,728 cubic inches inside a single cubic foot. To convert upward, divide your total by 1,728.
Can I convert cubic centimeters directly to cubic inches?
Yes, but the multiplier is small. You must multiply your total cubic centimeters (cm³) by approximately 0.0610237 to find the equivalent cubic inches.
Is an engine 'liter' the same as a cubic inch?
They measure the exact same thing (engine displacement volume), but use different scales. 1 liter equals roughly 61.02 cubic inches. A '5.0L' Mustang engine is roughly 302 cubic inches.
How do you express cylinder volume in cubic inches?
To express cylinder volume in cubic inches: (1) Measure the radius and height in inches. (2) Apply the formula V = π × r² × h. The result is in cubic inches (cu in). To convert from cm³ to cubic inches, divide by 16.387 (1 cubic inch = 16.387 cm³). To convert from litres to cubic inches, multiply by 61.024 (1 litre = 61.024 cubic inches).