Measure room volume, moving boxes, and truck space in seconds. Enter length, width, and height to get cubic feet, cubic inches, cubic meters, liters, and U.S. gallons instantly.
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Cubic Feet
Cubic Inches
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Cubic Meters
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Liters
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Gallons (US)
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Converted Result
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Follow these four steps to measure any box, room, shelf, or storage space correctly. For the most accurate result, use the inside dimensions when you want usable capacity rather than outside size.
Measure the longest side from front to back. In a room, measure wall to wall. In a box or bin, measure the inside if you want usable storage space.
Measure side to side at the widest point. If the object narrows or tapers, use the smallest practical width when fit matters.
Measure from the floor to the top of the usable or stackable space. Leave out any aisle, lid, or clearance space you do not plan to fill.
Click calculate to get cubic feet right away, then review the extra conversions for cubic inches, cubic meters, liters, gallons, and other planning needs.
Suppose your stacked boxes fill a storage area that is 5 feet long, 5 feet wide, and 6 feet high. Multiply 5 × 5 × 6 to get 150 cubic feet. That equals 259,200 cubic inches, about 4.25 cubic meters, and roughly 1,122 U.S. gallons, which makes it easier to compare against truck size, container space, or storage capacity.
Your main result is the total volume measurement in cubic feet. This tells you how much three-dimensional space an object or area holds. It is different from square footage, which measures flat area only. If you are choosing a storage unit size, planning room volume for airflow, comparing shipping box volume, or estimating material fill, cubic feet is the number you need first.
The supporting conversions help you use the same measurement in the format your job requires. Cubic inches are common for package specs, cubic meters are standard in international freight, cubic yards are common for mulch, gravel, and concrete, and gallons are useful for tanks, aquariums, and liquid storage. Because LiteCalc displays all of these together, you can move from room volume to container capacity or dimensional weight research without repeating the math.
A result of 200 cubic feet means the total inside volume equals 200 one-foot cubes. You can reach 200 cubic feet with many combinations, such as 10 × 5 × 4 feet or 20 × 5 × 2 feet. The calculator helps you compare those options quickly when you are trying to fit belongings into the right storage unit size.
Real storage rarely uses 100 percent of the measured volume. Shelving, stacking gaps, odd furniture shapes, wheel wells, and safe walking space reduce how much you can actually load. In practice, many people leave 10 to 20 percent as a planning buffer for smoother moving and easier access.
If you are working from floor area instead of full dimensions, use a square-feet-to-cubic-feet shortcut. Multiply the area by the height or depth. For example, 120 square feet of floor space with an 8-foot ceiling equals 960 cubic feet. That method is helpful when you know the footprint of a room, shed, pallet, or garden bed but do not want to remeasure every side.
For freight and warehousing, volume is only part of the picture. Carriers may also charge by dimensional weight, especially for lightweight items that take up a lot of space. Volume measurement, shipping box volume, and dimensional weight often work together, so it is smart to keep both your physical size and weight handy.
The basic formula for cubic feet is simple: length × width × height. When all three dimensions are in feet, your answer is already in cubic feet. This is the fastest method for boxes, rooms, cabinets, storage units, trailers, and most other rectangular spaces.
If a closet measures 8 feet long, 3 feet wide, and 8 feet high, the volume is 8 × 3 × 8 = 192 cubic feet. That number helps you compare the closet against stacked box volume, portable storage container capacity, or appliance size.
Multiply the dimensions in inches, then divide by 1,728 because 12 × 12 × 12 = 1,728 cubic inches in one cubic foot. A box that is 24 inches long, 18 inches wide, and 16 inches high gives 6,912 cubic inches. Divide 6,912 by 1,728 and you get 4 cubic feet.
Multiply cubic yards by 27 to convert to cubic feet. This is useful for landscaping jobs. If you order 3 cubic yards of mulch, that equals 81 cubic feet. If you need the reverse conversion, divide cubic feet by 27 to get cubic yards.
You can also convert metric volume. One cubic meter equals about 35.315 cubic feet. One cubic foot equals about 28.316 liters. These conversions matter when you compare U.S. storage unit size with international freight documents that use cubic meters or when you compare room volume with tank capacity listed in liters.
Irregular shapes need one extra step. Break the object into smaller rectangles, cubes, or cylinders, calculate each section, and add the totals. This produces a practical estimate for sectional sofas, L-shaped shelves, built-in closets, and mixed cargo loads.
A 5 ft × 5 ft × 8 ft unit has 200 cubic feet. That can work for seasonal bins, small furniture, and roughly a closet worth of belongings. Leave some open height for safe stacking and access, especially if you plan to retrieve items often.
If your furniture and box list adds up to about 720 cubic feet, a truck rated for 750 to 900 cubic feet is usually a safer match than a 400-cubic-foot van. Always keep a buffer for odd shapes, tie-down space, and the fact that cargo never packs like perfect cubes.
A bedroom that is 12 ft × 15 ft × 8 ft contains 1,440 cubic feet of air. That room volume can help you compare air purifier coverage, fan sizing, or general ventilation needs. It is also a simple way to compare one room against another during remodels.
A garden bed measuring 18 ft × 4 ft with a 0.5 ft depth needs 36 cubic feet of soil. Divide by 27 and you get about 1.33 cubic yards. That conversion keeps you from over-ordering bulky material and paying extra delivery fees.
A carton that measures 30 in × 20 in × 18 in has 10,800 cubic inches. Divide by 1,728 to get 6.25 cubic feet. That is a useful cross-check when you compare shipping box volume against cubic meters, pallet space, or dimensional weight tables.
If a freezer space is 3 ft wide, 2.5 ft deep, and 6 ft high, the cavity volume is 45 cubic feet. That does not mean you should buy a 45-cubic-foot freezer. Use the measurement to compare outer dimensions, door clearance, and ventilation gaps before you order.
One of the biggest content gaps on the original LiteCalc page was a practical benchmark section. When you search for a cubic feet calculator, you often need a decision, not just a number. You want to know whether your load fits a 5×10 storage unit, whether a 16-foot truck is enough, or whether a freight container has the right container capacity for your shipment.
Use these ranges as planning guides. Actual capacity depends on doors, wheel wells, shelving, odd-shaped furniture, and how tightly you can stack. For U.S. self-storage and moving jobs, keeping 10 to 15 percent open space is usually smart. That buffer gives you room to walk, protect fragile items, and avoid crushing cartons.
| Space Type | Typical Size | Approx. Cubic Feet | Good For |
|---|---|---|---|
| Storage unit | 5 ft × 5 ft × 8 ft | 200 ft³ | Closet overflow, bins, small furniture |
| Storage unit | 5 ft × 10 ft × 8 ft | 400 ft³ | Studio apartment items |
| Storage unit | 10 ft × 10 ft × 8 ft | 800 ft³ | One-bedroom apartment contents |
| Moving truck | 10-12 ft | 400-450 ft³ | Dorm or studio move |
| Moving truck | 15-17 ft | 750-900 ft³ | Small apartment or one-bedroom move |
| Moving truck | 20 ft | 1,000-1,200 ft³ | Two-bedroom move |
| Freight container | 20 ft standard | About 1,170 ft³ | Small export loads |
| Freight container | 40 ft standard | About 2,390 ft³ | Larger cargo loads |
If your calculator total comes to 680 cubic feet, a 10×10 unit with 800 cubic feet may look large enough on paper. In real storage, tall furniture, safe walkways, and the need to reach boxes later can easily reduce practical space. Many renters step up one size when they want easier access.
Freight carriers often want both cubic feet and cubic meters. If your load is 500 cubic feet, that is about 14.16 cubic meters. Keeping both numbers ready speeds up quotes and helps you compare domestic and international carrier forms.
Keep planning with these related LiteCalc tools for volume, dimensions, conversions, and transport estimates.
Calculate volume for shapes that are not simple rectangular boxes.
Double-check ceiling height, shelf height, or appliance clearance.
Compare package weight with size when freight pricing matters.
Convert feet, inches, liters, and other values used in volume work.
Check mass when you balance cubic footage with product weight.
Estimate travel time when your move or shipment has a schedule.
Measure the inside length, width, and height of the unit in feet and multiply them together. A 10 ft by 10 ft by 8 ft storage unit has 800 cubic feet of space before aisles and access gaps.
Multiply length, width, and height in inches, then divide by 1,728. For example, a box that is 24 by 18 by 16 inches has 6,912 cubic inches, which equals 4 cubic feet.
Multiply the room length by width by ceiling height. A room that is 12 ft by 15 ft by 8 ft contains 1,440 cubic feet.
Many 10 to 12 foot trucks hold about 400 to 450 cubic feet, 15 to 17 foot trucks hold about 750 to 900 cubic feet, 20 foot trucks hold about 1,000 to 1,200 cubic feet, and 26 foot trucks can reach around 1,600 cubic feet.
Multiply the area in square feet by the height or depth in feet. If a floor area is 120 square feet and the material depth is 0.5 feet, the volume is 60 cubic feet.
The basic formula is length times width times height. When all three measurements are in feet, the answer is cubic feet.
One cubic yard equals 27 cubic feet because each yard is 3 feet and 3 × 3 × 3 equals 27.
Yes. Break the shape into smaller boxes, cylinders, or prisms, calculate each part, and add the volumes together for a practical estimate.