Conversions & Units
Cubic Yards to Cubic Meters
Converts cubic yards to cubic meters, cubic feet, US gallons, and liters
Updated May 27, 2026 · Live
What this tool does
Converts a volume in cubic yards to cubic meters, cubic feet, US gallons, and liters using exact unit definitions.
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How the cubic yards to cubic meters conversion works
The calculator multiplies the volume in cubic yards by 0.764554857984 to give cubic meters. That factor is the cube of 0.9144, the exact meter-equivalent of one yard. From the cubic meter result, liters are derived by multiplying by 1,000; cubic feet by multiplying the original cubic-yard input by 27 (since 1 yd = 3 ft, 1 yd³ = 27 ft³); and US gallons by multiplying cubic yards by 201.974. Every output is a direct consequence of the factor, with no intermediate approximation.
The exact conversion factor
The international yard was defined as exactly 0.9144 meters in 1959. Cubing both sides: 1 yd³ = 0.9144³ m³ = 0.764554857984 m³ exactly. This is a defined constant, not a measured one, so the conversion carries no rounding error in the factor. The calculator displays m³ to three decimal places (resolution of 1 liter), which is sufficient for concrete and aggregate ordering.
Why cubic yards are used in US construction
Ready-mix concrete, aggregate, topsoil, gravel, and fill are all quoted and ordered in cubic yards in the US. A standard concrete truck holds roughly 8–10 cubic yards. Mixing ratios, pump line losses, and batch plant documentation all use cubic yards. When a project requires metric specifications — for international engineering documentation, metric-dimensioned drawings, or coordination with metric-spec equipment — the cubic-yard volume converts to cubic meters using this factor.
Worked examples
One cubic yard (a single yard in each of three dimensions) equals 0.765 m³, 27.0 ft³, 202 US gallons, and 765 liters. Ten cubic yards — a typical small concrete pour — equals 7.646 m³, 270.0 ft³, 2,020 US gallons, and 7,646 liters. Half a cubic yard equals 0.382 m³, 13.5 ft³, 101 US gallons, and 382 liters.
Cubic yards, cubic feet, and the factor of 27
Because 1 yard is exactly 3 feet, one cubic yard equals exactly 27 cubic feet (3³ = 27). This relationship is worth knowing because concrete volume is sometimes cited in cubic feet on smaller jobs — a single concrete footing or post-hole, for example. Dividing cubic feet by 27 returns cubic yards; multiplying cubic yards by 27 returns cubic feet. No approximation is involved.
US gallons from cubic yards
One US liquid gallon equals exactly 231 cubic inches. One cubic yard is 46,656 cubic inches (36³). Dividing: 46,656 ÷ 231 = 201.974 US gallons per cubic yard exactly. This equivalence is used in tank sizing, irrigation system design, and water-storage calculations where volumes are sometimes stated in gallons but specified in cubic yards of excavation or concrete.
Liters from cubic meters
One liter is defined as exactly 0.001 m³, so liters = m³ × 1,000. For 1 yd³: 0.764554857984 × 1,000 = 764.555 liters (shown as 765 L at zero decimal places). Liters are used in metric pump datasheets, European equipment specs, and grout-mix documentation where small volumes are expressed per liter rather than per cubic foot.
Precision and rounding
Cubic meters are displayed to three decimal places — a resolution of 0.001 m³ or 1 liter. Ready-mix concrete is typically batched to ±0.1 yd³ tolerance, which at the conversion factor is ±0.076 m³, so three decimal places captures the relevant precision. US gallons are shown as a whole number because fractional gallons are not meaningful at the scale of concrete or aggregate orders. Cubic feet are shown to one decimal place.
Using this alongside other BuildMetricLab tools
The cubic meters result feeds directly into concrete mix ratio calculations, pump line calculators, and structural volume checks. The feet and inches to meters calculator handles linear dimension conversions, and the square feet to square meters calculator converts plan areas. All BuildMetricLab tools run entirely in the browser — no sign-up, no data sent anywhere, and the formula is shown on the page so the math can be audited.
Sources & methodology
Converts cubic yards to cubic meters using the exact factor 0.764554857984, derived from the cube of the international yard definition (0.9144 m). Cubic feet are derived as yd³ × 27 (exact). US gallons are derived as yd³ × 201.974 (46,656 in³ per yd³ divided by 231 in³ per US gallon). Liters are derived as m³ × 1,000 (exact).
Frequently asked questions
Is 1 cubic yard exactly 0.764555 cubic meters?
The exact factor is 0.764554857984 m³ per cubic yard, derived by cubing the exact definition of the yard (0.9144 m). The displayed result of 0.765 m³ is the factor rounded to three decimal places. The conversion itself is exact — no approximation is baked into the math.
Why does 1 cubic yard equal 27 cubic feet?
Because 1 yard is exactly 3 feet, so 1 cubic yard = 3 ft × 3 ft × 3 ft = 27 ft³. This is exact by the definition of the yard, with no rounding involved.
How many US gallons are in a cubic yard?
Exactly 201.974 US gallons. One US gallon is defined as 231 cubic inches; one cubic yard is 46,656 cubic inches (36³). Dividing 46,656 by 231 gives 201.974.
Does this tool convert in the other direction — cubic meters to cubic yards?
This tool converts cubic yards to cubic meters. The reverse direction divides the cubic meter value by 0.764554857984 (equivalently, multiplies by 1.307950619). That uses the same defined factor and produces an exact result.
Does this replace professional advice?
The arithmetic is exact for the volume entered. For concrete or aggregate orders, the volume calculated from a set of dimensions is an estimate; actual site conditions, forming tolerances, and pump losses affect the final quantity ordered. A licensed contractor or engineer is the appropriate source for final quantity determinations.
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