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Length

Width

Height / Depth

Quantity (Items / Replicas)

Waste Factor (%)

Material Weight & Cost Estimator

Estimate total freight weight and purchase cost based on material type

Density (lbs per cubic foot)

Price per Cubic Yard ($)

How to Calculate Cubic Feet: Formulas & Conversion Math

A cubic foot (cu ft or ft³) is a three-dimensional unit of volume measurement equal to a cube with sides of exactly one foot (12 inches). It is the universal standard for calculating shipping freight volume, soil, mulch, concrete pours, room airflow, and lumber capacity.

When Dimensions are in Feet

Multiply all three dimensions measured in feet:

Cubic Feet = Length (ft) × Width (ft) × Height (ft)

When Dimensions are in Inches

Multiply length, width, and height in inches, then divide by 1,728:

Cubic Feet = (Length in. × Width in. × Height in.) ÷ 1,728

Cubic Feet Volume Conversion Quick Reference Table

Cubic Feet (ft³)	Cubic Yards (yd³)	Board Feet (BDFT)	Cubic Meters (m³)	US Liquid Gallons
1 cu ft	0.037 yd³	12 BF	0.0283 m³	7.48 gal
5 cu ft	0.185 yd³	60 BF	0.1416 m³	37.40 gal
10 cu ft	0.370 yd³	120 BF	0.2832 m³	74.81 gal
27 cu ft (1 cu yd)	1.000 yd³	324 BF	0.7646 m³	201.97 gal
54 cu ft (2 cu yd)	2.000 yd³	648 BF	1.5291 m³	403.95 gal
100 cu ft	3.704 yd³	1,200 BF	2.8317 m³	748.05 gal

자주 묻는 질문

How do I calculate cubic feet?

To calculate cubic feet for a rectangular space or box, measure length, width, and height in feet and multiply them together: Length (ft) × Width (ft) × Height (ft) = Cubic Feet. If measuring in inches, multiply Length (in) × Width (in) × Height (in) and divide the total by 1,728.

How do I convert cubic feet to cubic yards?

Because 1 yard equals 3 feet, a cubic yard contains 3 × 3 × 3 = 27 cubic feet. To convert cubic feet to cubic yards, simply divide your total cubic feet by 27. For example, 135 cubic feet ÷ 27 = 5 cubic yards.

How many board feet are in a cubic foot?

There are exactly 12 board feet in one cubic foot. A board foot is 12" × 12" × 1" = 144 cubic inches. Since 1 cubic foot equals 1,728 cubic inches, dividing 1,728 by 144 yields exactly 12 board feet.

How do I calculate cubic feet from square footage and depth?

Convert your depth measurement into feet (divide depth in inches by 12), then multiply by square feet. For example, a 200 sq ft patio with 4 inches of concrete depth: 200 × (4 ÷ 12) = 200 × 0.333 = 66.67 cubic feet (2.47 cubic yards).

What is CBF and how do I convert CBF to CBM for freight?

CBF stands for Cubic Feet, while CBM stands for Cubic Meters. In global shipping and timber trade, 1 Cubic Foot (CBF) equals 0.0283168 Cubic Meters (CBM). To convert CBF to CBM, multiply CBF by 0.0283168. To convert CBM to CBF, multiply CBM by 35.3147.

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