How the Cubic Feet ↔ Square Feet Calculator Works
Area (square feet) relates to volume (cubic feet) through a chosen third dimension (height/depth). If you know any two of {area, height, volume}, the third is determined:
- Square feet = Cubic feet ÷ Height (in feet).
- Cubic feet = Square feet × Height (in feet).
- Height (ft) = Cubic feet ÷ Square feet.
The calculator converts inches ↔ feet automatically and rounds only for display (you control decimals above).
Square feet to cubic feet formula
ft³ = ft² × height(ft). Example: 250 ft² at 8 ft high → 250 × 8 = 2000 ft³.
How to convert square feet to cubic feet
- Enter the floor/wall area in ft².
- Enter the layer thickness or height (choose ft or in).
- The tool outputs volume in ft³ in real time.
Cubic feet to square feet formula
ft² = ft³ ÷ height(ft). Example: 120 ft³ spread 6 in (0.5 ft) thick covers 120 ÷ 0.5 = 240 ft².
How to convert cubic feet to square feet
- Enter the volume in ft³.
- Enter the height/depth (ft or in).
- The tool outputs area in ft² instantly.
Quick answers
- How many sq ft are in 1 cubic ft? It depends on height. With 1 ft height → 1 ft²; with 6 in (0.5 ft) → 2 ft²; with 3 in (0.25 ft) → 4 ft².
- Is a cubic foot 12×12×12? Yes: 12 in × 12 in × 12 in = 1728 in³ = 1 ft³.
- What is 2000 cubic feet in square feet? Depends on height. For 8 ft → 2000 ÷ 8 = 250 ft²; for 10 ft → 200 ft².
- How much sq ft does 1 cu ft cover?
coverage(ft²) = 1 ÷ height(ft). Example: 2 in (0.1667 ft) layer → ≈ 6 ft².