Cubic Feet to Cubic Yards Converter

Cubic Foot

Definition: The cubic foot (symbol: ft³ or cu ft) is a unit of volume used in the imperial and US customary measurement systems. One cubic foot equals the volume of a cube with sides of 1 foot (12 inches) each. It equals 1,728 cubic inches. There are exactly 27 cubic feet in 1 cubic yard (3 feet × 3 feet × 3 feet).

History/origin: The cubic foot derives from the foot, which has been used as a unit of length since ancient times. The cubic foot became standardized for volume measurements in construction, engineering, and material calculations. The 27:1 relationship with cubic yards is fundamental to construction and landscaping work.

Current use: The cubic foot is commonly used for measuring smaller volumes in construction, while cubic yards are used for bulk materials. Converting cubic feet to cubic yards is essential for ordering concrete, soil, gravel, mulch, and other construction materials, which are typically sold by the cubic yard.

Cubic Yard

Definition: The cubic yard (symbol: yd³ or cu yd) is a unit of volume used primarily in the United States for bulk materials. One cubic yard equals the volume of a cube with sides of 1 yard (3 feet) each. It equals exactly 27 cubic feet or 46,656 cubic inches.

History/origin: The cubic yard derives from the yard, which has been a standard unit of length in English-speaking countries for centuries. The cubic yard became the standard unit for measuring large volumes of bulk materials in construction and landscaping. The simple 27:1 relationship with cubic feet (3³ = 27) makes conversions straightforward.

Current use: The cubic yard is the standard unit for ordering bulk materials in the United States, including concrete, soil, sand, gravel, mulch, and topsoil. Concrete ready-mix trucks, dump trucks, and material suppliers use cubic yards for pricing and delivery. Most landscaping and construction projects require calculations in cubic yards.

Cubic Feet to Cubic Yards Conversion Table

Cubic Feet [ft³]	Cubic Yards [yd³]
1 ft³	0.037 yd³
5 ft³	0.185 yd³
10 ft³	0.370 yd³
27 ft³	1 yd³
50 ft³	1.852 yd³
100 ft³	3.704 yd³
270 ft³	10 yd³
500 ft³	18.519 yd³
1000 ft³	37.037 yd³

How to Convert Cubic Feet to Cubic Yards

Formula:

27 ft³ = 1 yd³ (exact)

1 ft³ = 0.037037 yd³

yd³ = ft³ ÷ 27

Quick Mental Math:

Divide ft³ by 27 to get cubic yards

Or think: 27 cubic feet = 1 cubic yard

Why 27?

1 yard = 3 feet, so 1 cubic yard = 3 ft × 3 ft × 3 ft = 27 ft³

Common Conversions:

1 ft³ = 0.037 yd³

27 ft³ = 1 yd³ (perfect conversion)

54 ft³ = 2 yd³

81 ft³ = 3 yd³

270 ft³ = 10 yd³

Useful Relationships:

1 cubic yard = 27 ft³ = 46,656 in³ = 764.555 L

1 cubic foot = 0.037 yd³ = 1,728 in³ = 28.317 L

1 cubic yard = 201.974 gal (US)

Examples:

Convert 27 cubic feet to cubic yards:

27 ft³ ÷ 27 = 1 yd³

This is exactly 1 cubic yard (perfect conversion)

Convert 54 cubic feet to cubic yards:

54 ft³ ÷ 27 = 2 yd³

This is exactly 2 cubic yards

Convert 100 cubic feet to cubic yards:

100 ft³ ÷ 27 = 3.704 yd³

This is approximately 3.7 cubic yards

Convert 270 cubic feet to cubic yards:

270 ft³ ÷ 27 = 10 yd³

This is exactly 10 cubic yards

Practical Applications:

Concrete Slab: 20' × 20' × 0.5' thick = 200 ft³ = 7.4 yd³

Garden Bed: 10' × 4' × 1' deep = 40 ft³ = 1.48 yd³

Driveway: 30' × 12' × 0.33' (4") = 120 ft³ = 4.44 yd³

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