Cubic Feet Calculator
Calculate volume in cubic feet from dimensions or convert from other volume units. Perfect for shipping, storage, moving, and construction projects.
Calculate Cubic Feet
Quick Examples:
Results
Enter dimensions or a value to calculate cubic feet
How to Use the Cubic Feet Calculator
Method 1: Calculate from Dimensions
Use this method when you know the length, width, and height of a space or object:
- Select "From Dimensions" mode
- Choose your measurement unit (feet, inches, centimeters, or meters)
- Enter the length, width, and height
- Click "Calculate" to see the cubic feet result
Method 2: Convert from Other Units
Use this method to convert a known volume to cubic feet:
- Select "Unit Conversion" mode
- Choose the unit you're converting from
- Enter the value
- Click "Calculate" to see the result in cubic feet
💡 Measurement Tips
For accurate results, measure to the nearest inch or centimeter. For irregularly shaped objects, measure the maximum length, width, and height - this gives the bounding box volume.
Cubic Feet Formulas
Basic Volume Formula
Cubic Feet = Length (ft) × Width (ft) × Height (ft)
When all dimensions are in feet, simply multiply them together.
From Inches
Cubic Feet = (L × W × H in inches) ÷ 1,728
Since there are 12 inches in a foot, there are 12³ = 1,728 cubic inches in a cubic foot.
From Centimeters
Cubic Feet = (L × W × H in cm) ÷ 28,316.8
One cubic foot equals 28,316.8 cubic centimeters.
Example: Storage Unit
5ft × 5ft × 8ft storage unit
Volume = 5 × 5 × 8 = 200 cubic feet
Example: Moving Box
18″ × 18″ × 24″ box
Volume = (18 × 18 × 24) ÷ 1,728 = 4.5 cubic feet
Volume Conversion Table
| Unit | = Cubic Feet | Cubic Feet = |
|---|---|---|
| 1 Cubic Meter (m³) | 35.3147 ft³ | 0.0283 m³ |
| 1 Cubic Yard (yd³) | 27 ft³ | 0.037 yd³ |
| 1 Cubic Inch (in³) | 0.000579 ft³ | 1,728 in³ |
| 1 Liter (L) | 0.0353 ft³ | 28.317 L |
| 1 US Gallon | 0.1337 ft³ | 7.481 gal |
| 1 UK Gallon | 0.1605 ft³ | 6.229 gal (UK) |
Common Uses for Cubic Feet
📦 Moving & Storage
- • Calculate moving truck capacity
- • Estimate storage unit needs
- • Count boxes and furniture volume
- • Plan packing efficiently
🏗️ Construction
- • Calculate concrete volume
- • Estimate fill material (gravel, sand)
- • Measure room volumes for HVAC
- • Plan excavation quantities
🚚 Shipping & Freight
- • Determine shipping class
- • Calculate freight costs
- • Plan container loading
- • Estimate warehouse space
🌊 Liquids & Tanks
- • Calculate tank capacity
- • Estimate pool volume
- • Measure aquarium capacity
- • Plan irrigation needs
Frequently Asked Questions
How many cubic feet are in a cubic yard?
There are exactly 27 cubic feet in one cubic yard. This is because a yard is 3 feet, so 3 × 3 × 3 = 27 cubic feet.
How do I convert cubic feet to gallons?
Multiply cubic feet by 7.48052 to get US gallons. For example, 10 cubic feet = 74.8 US gallons. For UK gallons, multiply by 6.229.
What size storage unit do I need?
A 5×5 unit (200 cu ft) holds a small room of furniture. A 10×10 unit (800 cu ft) fits a 1-bedroom apartment. A 10×20 unit (1,600 cu ft) accommodates a 2-3 bedroom home.
How many cubic feet is a standard refrigerator?
Standard refrigerators range from 18-25 cubic feet internal capacity. The external volume (space it occupies) is typically about 30-35 cubic feet.
How do I calculate cubic feet for an irregularly shaped object?
For irregular shapes, measure the maximum length, width, and height to get the bounding box volume. For more accurate measurements, you can use water displacement or break the object into simpler shapes.
What's the difference between cubic feet and board feet?
A cubic foot is a volume measurement (12″ × 12″ × 12″). A board foot is a lumber measurement (12″ × 12″ × 1″ = 1/12 cubic foot), commonly used in the woodworking industry.
Related Calculators
Disclaimer
This calculator provides estimates for planning purposes. Actual volumes may vary based on measurement accuracy and object shape. For shipping and freight calculations, always verify with your carrier as they may use specific measurement methods.