Rectangle Volume Calculator
Calculate the volume of a rectangular prism (box shape) by entering length, width, and height. This calculator multiplies three dimensions to find cubic volume, which is essential for shipping, storage, construction, aquariums, concrete pouring, and any project that involves filling or measuring a rectangular space.
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Result
Enter values above and click Calculate to see your result.
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Formula
How it works: Volume equals length times width times height. All three dimensions must be in the same unit. The result is expressed in cubic units (cubic inches, cubic feet, cubic centimeters, or cubic meters depending on your input).
Worked Example
Frequently Asked Questions
What units should I use?
Use the same unit for all three dimensions. If length is in inches, width and height must also be in inches. The result will be in cubic inches. Mixing units will produce incorrect results.
Can dimensions be decimals?
Yes. Decimal dimensions like 4.5 x 3.25 x 2.1 are fully supported for precise measurements in construction and engineering.
What is the difference between a rectangle and a rectangular prism?
A rectangle is a flat 2D shape with length and width. A rectangular prism (also called a cuboid or box) is the 3D version with length, width, and height. This calculator computes the 3D volume.
How do I convert cubic feet to gallons?
Multiply cubic feet by 7.48052 to get US gallons. For example, 24 cubic feet = 24 x 7.48 = approximately 179.5 gallons.
Can I use this for concrete, soil, or mulch calculations?
Yes. Enter the length, width, and depth of the area you need to fill. The volume result tells you how many cubic feet or cubic yards of material to order.
How can I put this Rectangle Volume Calculator on my blog or website?
Yes, the Rectangle Volume Calculator is fully embeddable. Tap "Embed" above to configure appearance and copy the code. It is free to use, works on any platform (HTML, WordPress, CMS), and adjusts to any screen size automatically. Visit calculory.com/services/embed-calculators for the complete guide.
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