Make sense of space — no tape measure stress required!
📦 Whether you’re measuring a box for shipping, calculating how much soil fits in a raised bed, or just trying to understand the size of a storage bin, knowing how to convert inches into cubic feet is super handy.
Let’s walk through it step by step — no math anxiety allowed!
Table of Contents
🙋 What Is a Cubic Foot?
A cubic foot is a measurement of volume — or how much space something takes up in three dimensions: length × width × height.
One cubic foot is the same as a cube that’s 12 inches wide × 12 inches tall × 12 inches deep.
So when you’re starting with inches, you just need to convert to feet first — or divide the total volume in cubic inches by how many cubic inches are in a cubic foot.
Spoiler:
1 cubic foot = 1,728 cubic inches (12 × 12 × 12)
🧮 The Formula to Convert Inches to Cubic Feet
If you’re starting with dimensions in inches, use this formula:
Cubic Feet = (Length × Width × Height) ÷ 1,728Make sure all three measurements are in inches, then multiply them together and divide the result by 1,728.
📦 Real Example: A Shipping Box
Let’s say you have a box that’s:
- 24 inches long
- 18 inches wide
- 12 inches high
Step 1: Multiply the inches together
24 × 18 × 12 = 5,184 cubic inchesStep 2: Convert to cubic feet
5,184 ÷ 1,728 = 3 cubic feetSo your box is 3 cubic feet in volume!
⚙️ Calculator
Enter the Width, Length and Height in inches. The tool will calculate the volume in Cubic Feet.
🧰 Quick Reference
| Size in Inches | Volume in Cubic Feet |
|---|---|
| 12″ × 12″ × 12″ | 1 cu ft |
| 24″ × 12″ × 12″ | 2 cu ft |
| 36″ × 18″ × 12″ | 4.5 cu ft |
| 60″ × 30″ × 20″ | 20.8 cu ft |
📌 Why It’s Useful
Knowing how to calculate cubic feet helps with:
- Shipping and packaging
- Buying mulch, soil, or gravel
- Storage and moving estimates
- Appliance or furniture planning
- DIY and construction projects
💡 Bonus Tip
If you have measurements in feet, you can skip the conversion and just multiply:
Cubic Feet = Length (ft) × Width (ft) × Height (ft)Easy, right?