MATERIAL AND PROJECT ESTIMATES
Volume Calculator
Calculate rectangular volume in cubic feet and convert it to cubic yards and cubic meters.
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How it works
Rectangular volume = length × width × height. One cubic yard is 27 cubic feet.
Assumptions
All three measurements are in feet and form a rectangular prism.
About this calculator
This volume calculator gives a direct rectangular-prism result in the units commonly used for U.S. home projects. Keep all measurements in feet before calculating.
How to use it
- Measure length, width, and height in feet.
- Enter decimal feet when a dimension includes inches.
- Review cubic feet and the converted cubic-yard value.
- Use a project-specific calculator when compaction, waste, or irregular shapes matter.
Use case
volume calculator: a clear planning check
Multiply three dimensions entered in feet and review the same rectangular volume in common U.S. project units before choosing a material-specific estimate.
Calculate a rectangular project volume and compare cubic feet, cubic yards, and cubic meters.
Source and update
Last reviewed: 2026-08-10
NIST — International System of Units guidanceFrequently asked questions
How do you calculate cubic feet?
Multiply length by width by height when all three dimensions are in feet.
How many cubic feet are in a cubic yard?
There are 27 cubic feet in one cubic yard.
Can I use this for an irregular shape?
Split the shape into rectangular sections or use a geometry-specific method.
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