How many cubic feet are in a cubic yard?

Exactly 27. A cubic yard is 3 ft × 3 ft × 3 ft, so always cube the linear factor rather than multiplying by three.

How do I convert square feet to acres?

Divide by 43,560. The calculator does this automatically when you enter a figure in square feet and read the acres row.

Is a cubic metre the same as a kilolitre?

Yes. One cubic metre holds exactly 1,000 litres, which is useful when sizing tanks, ponds or water storage.

Why are acres shown to six decimal places?

Because an acre is a large unit, small parcels produce fractions well under 0.01. Extra digits keep small lot areas meaningful.

Construction Conversions

Length / Area / Volume Converter

Deep-dive converter with inches, yards, acres, cubic yards and litres.

Inputs

Given

Dimension

Value

Unit

All equivalent units

Computed

Base value

30.4800 m

Every row below is derived from this SI base figure.

in1,200.0000

ft100.0000

yd33.3333

mm30,480.0000

cm3,048.0000

m30.4800

100.00 ft = 30.4800 m

How this is calculated

This deep-dive converter shows every unit in a dimension at once, which is how estimators usually work: you measure in one unit and order in another. Enter a figure, pick its unit, and the full conversion table updates live.

base = value × factor(unit) → other = base ÷ factor(other)

Area and volume factors are the square and cube of the corresponding length factor, which is why the differences grow quickly. One yard is three feet, but one cubic yard is twenty-seven cubic feet — the classic mistake when ordering ready-mix concrete, which is sold by the cubic yard in the US and by the cubic metre almost everywhere else.

Land measures are included because site plans mix them freely: an acre is 43,560 square feet or about 4,047 square metres, and a hectare is 10,000 square metres or roughly 2.47 acres.

Worked example

Ordering concrete for a slab

A garage slab is 24 ft × 24 ft × 4 in thick.
Volume = 24 × 24 × (4 ÷ 12) = 192 cu ft.
192 cu ft ÷ 27 = 7.1 cu yd — the unit ready-mix plants quote in.
In metric that is 7.1 × 0.7646 ≈ 5.4 m³. Order 8 cu yd / 6 m³ to allow for spillage and an uneven subgrade.

Common mistakes

Forgetting thickness is in inches
Slab and pavement depths are quoted in inches while length and width are in feet. Convert the thickness to feet before multiplying, or the volume is 12× too large.
Mixing square and cubic units
Coverage (sq ft) answers 'how much area'; concrete and soil are sold by volume (cu yd, m³). A square-yard figure cannot be used to order concrete.
Using US survey feet for land
Acreage from old US surveys may use the survey foot (1,200/3,937 m). The difference is tiny per foot but adds up on large parcels; the international foot used here is the modern standard.