AI Two

Free Utility

Cubic Feet Calculator

Enter length, width and height in inches, feet, centimeters, meters or yards. The result updates as you type and shows cubic feet, cubic meters and cubic yards side by side. Runs entirely in your browser — nothing is uploaded.

Quick presets

Cubic Feet

960 ft³

Cubic Meters

27.18 m³

Cubic Yards

35.56 yd³

Also equal to 1,658,880 cubic inches.

Worked examples

Room: 12 ft x 10 ft x 8 ft

12 x 10 x 8 = 960 cubic feet. Divide by 27 for cubic yards: 960 / 27 ≈ 35.6 yd³.

Box: 18 in x 18 in x 16 in

Convert to feet first: 1.5 x 1.5 x 1.33 ≈ 3 cubic feet. This is a standard "medium" moving box.

Common conversions

1 cubic foot= 1,728 cubic inches
1 cubic foot= 0.0283 cubic meters
1 cubic foot= 0.037 cubic yards
1 cubic yard= 27 cubic feet
1 cubic meter= 35.31 cubic feet
1 gallon= 0.1337 cubic feet

How to calculate cubic feet

Cubic feet = length x width x height, with all three measured in feet. Measure the longest side, the side across, and the height. If you measured in inches, divide each number by 12 first, or multiply them in inches and divide the result by 1,728. If you measured in centimeters, multiply in cm and divide by 28,317.

  1. Measure length, width and height with the same unit.
  2. Convert each one to feet (inches / 12, cm / 30.48, meters x 3.281).
  3. Multiply the three numbers. The answer is the volume in cubic feet (ft³).

For an L-shaped room or an odd-shaped space, split it into rectangles, work out each one, and add them together. For a round shape, see the cylinder answer in the FAQ below.

What does N cubic feet look like? Dimensions for common sizes

Many shapes give the same volume, so these are typical dimensions, not the only ones. Enter your own measurements above to check any size.

VolumeExample dimensionsAbout the size of
1 cubic foot12 x 12 x 12 inchesA small shoe box
1.5 cubic feet12 x 12 x 18 inchesA small moving box
3 cubic feet18 x 18 x 16 inchesA medium moving box
8 cubic feet4 x 2 x 1 feetA small raised garden bed, 12 in deep
10 cubic feet24 x 24 x 30 inchesA chest freezer
32 cubic feet4 x 8 x 1 feetA 4x8 garden bed, 12 in deep
45 cubic feet3 x 3 x 5 feetA wardrobe or a tall dresser
60 cubic feet3 x 4 x 5 feetA washer and dryer side by side
70 cubic feet5 x 3.5 x 4 feetA loveseat

Using cubic feet for moving, storage and shipping

Movers and storage companies quote by volume. Add up the cubic feet of your boxes and large furniture, then add about 10-15% for gaps, because furniture and boxes never stack perfectly. A medium moving box is about 3 cubic feet, so 30 boxes take roughly 90 cubic feet before any furniture.

For shipping, carriers often charge by dimensional weight: the box's volume divided by a number they set, compared with its real weight. Measure the outside of the packed box, not the item inside.

Next step

Planning a room around these measurements?

Visualize the room with AI before you move a single box or buy furniture.

Open →

Remodeling the space?

Upload a photo and try layouts, colors and furniture with AI Remodel.

Open →

Need a different calculator or tool?

Browse the community AI tool directory — hundreds of free tools, or create your own.

Open →
FAQ

Frequently asked questions

Quick answers before you start

Multiply length x width x height, all in feet. If your measurements are in inches, divide each one by 12 first (or just enter inches above and pick "Inches" — the calculator converts for you).

Most standard refrigerators run 18-25 cubic feet of interior capacity, but for shipping or moving purposes you want the EXTERIOR volume: measure the outside width, depth and height and multiply. A typical 36 x 34 x 70 inch fridge is about 50 cubic feet exterior (3 x 2.83 x 5.83 ft).

Divide cubic feet by 27 (there are 27 cubic feet in one cubic yard). This is the conversion movers and soil/mulch suppliers use most often.

Multiply cubic feet by 0.0283. The calculator above shows both automatically as you type.

Multiply the bed length x width x depth in feet. A 4x8 ft bed filled 12 inches deep needs 32 cubic feet of soil (4 x 8 x 1). Use the "Garden bed soil" preset above to prefill this.

Add up the cubic feet of your major items and boxes, then compare to the truck's rated cargo capacity (posted by the rental company) — leave headroom for irregular shapes and padding, since boxes never stack with zero gaps.

No. Square footage is a 2D measurement (length x width) used for floor area. Cubic footage is a 3D measurement (length x width x height) used for volume — how much space something occupies or how much a container can hold.

1,728. A cubic foot is 12 x 12 x 12 inches, so multiply cubic feet by 1,728 to get cubic inches, and divide cubic inches by 1,728 to get cubic feet. For example, 18 cubic feet is 31,104 cubic inches.

Multiply 3.1416 x radius x radius x height, all in feet. A round planter 2 ft across (radius 1 ft) and 1.5 ft tall holds 3.1416 x 1 x 1 x 1.5 ≈ 4.7 cubic feet.

About 7.48 US gallons. Multiply cubic feet by 7.48 for gallons — useful for tanks, ponds and aquariums.