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Cubic Feet Calculator
Convert length × width × height into cubic feet, cubic yards, cubic meters, and cubic inches. Works with feet, inches, yards, meters, or centimeters.
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Cubic Feet Calculator
Cubic Feet Formula
Cubic Feet = Length (ft) × Width (ft) × Height (ft)
If your measurements are in other units, convert them to feet first:
- Inches → feet: divide by 12
- Yards → feet: multiply by 3
- Meters → feet: multiply by 3.28084
- Centimeters → feet: multiply by 0.032808
Our calculator handles these conversions automatically — just select your input unit from the dropdown.
Volume Unit Conversion Table
| From | To Cubic Feet | To Cubic Yards | To Cubic Meters |
|---|---|---|---|
| 1 Cubic Foot | 1.000 | 0.03704 | 0.02832 |
| 1 Cubic Yard | 27.000 | 1.000 | 0.7646 |
| 1 Cubic Meter | 35.315 | 1.3080 | 1.000 |
| 1 Cubic Inch | 0.000579 | 0.0000214 | 0.0000164 |
| 1 Liter | 0.03531 | 0.001308 | 0.001 |
| 1 US Gallon | 0.1337 | 0.004951 | 0.003785 |
Common Cubic Feet Applications in Construction
| Material | Typical Order Unit | Conversion |
|---|---|---|
| Concrete | Cubic yards | ft³ ÷ 27 = yd³ |
| Gravel / Sand | Cubic yards or tons | ft³ ÷ 27 = yd³ |
| Topsoil | Cubic yards | ft³ ÷ 27 = yd³ |
| Mulch | Cubic yards or 2 cu ft bags | ft³ ÷ 2 = bags |
| Lumber (boards) | Board feet | Different formula |
| Dumpster rental | Cubic yards | ft³ ÷ 27 = yd³ |
? Frequently Asked Questions
How do I calculate cubic feet?
Multiply the length × width × height of the space in feet. For example, a box 3 ft long × 2 ft wide × 1.5 ft tall = 9 cubic feet. If your measurements are in inches, divide each one by 12 first to convert to feet.
How many cubic feet are in a cubic yard?
One cubic yard equals exactly 27 cubic feet (3 ft × 3 ft × 3 ft = 27). To convert cubic feet to cubic yards, divide by 27. To convert cubic yards to cubic feet, multiply by 27.
How many cubic feet are in a cubic meter?
One cubic meter equals approximately 35.315 cubic feet. To convert cubic meters to cubic feet, multiply by 35.315. To convert cubic feet to cubic meters, divide by 35.315.
What is cubic feet used for in construction?
Cubic feet measures volume for: concrete pours, soil/gravel fill, shipping and storage space, HVAC airflow (CFM), refrigerator capacity, and tank volumes. It's one of the most commonly used measurements in residential construction.
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💡 Pro Tips
- ✅ 1 cubic yard = 27 cubic feet
- ✅ Materials are ordered in cubic yards
- ✅ Bags are usually labeled in cubic feet
- ✅ Always add 10% extra for any fill material