Convert US Gallon to Cubic Yard (gal (US) → yd³)

Converting US gallons to cubic yards is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.

1. 1
   Take your value in US gallons

   Start with the number of US gallons (gal (US)) you want to convert.
2. 2
   Multiply by 0.004951

   The conversion factor from gal (US) to yd³ is 0.004951. Multiply your value by this number.
3. 3
   Read the result in cubic yards

   The result is your value in cubic yards (yd³).

Multiply the value in US gallons by 0.004951. For the reverse direction, multiply by 201.97403.

• ✓1 US gallon = 3.785 L = 128 US fluid ounces = 4 quarts.
• ✓Converting mpg (US) to L/100 km: 235.215 / mpg = L/100 km.
• ✓The US gallon is based on the old English Queen Anne wine gallon (1707).

• ✗Using UK gallons on a US fuel-economy figure — 30 mpg (US) = 36 mpg (UK).
• ✗Confusing US gallon (3.79 L) with UK gallon (4.55 L) — 20% difference.
• ✗Using "gallon" without qualifier in cross-Atlantic commerce.

What is the US Gallon?

The US liquid gallon equals exactly 3.785411784 liters and is the standard volume unit for fuel, beverages, milk, and household liquids in the United States. Defined as 231 cubic inches, the US gallon descends from the English wine gallon of 1707, which Britain replaced with the larger imperial gallon in 1824 — a divergence that left the United States with a different gallon than the rest of the English-speaking world. American gas stations price gasoline by the gallon (typical fill-up: 12–15 gallons), milk is sold in half-gallons and gallons, and many beverages come in fluid-ounce subdivisions of the gallon. The US gallon relates to the liter (1 gal ≈ 3.785 L), the quart (4 qt = 1 gal), the pint (8 pt = 1 gal), the cup (16 cups = 1 gal), and the imperial gallon (1 imp gal ≈ 1.201 US gal — about 20% larger).

• US fuel pricing and consumption
• US paint, oil and cleaning-product packaging
• US beverage containers (1-gallon jugs of milk)

What is the Cubic Yard?

The cubic yard equals exactly 27 cubic feet (or 0.764554857984 m³) and is the standard volume unit for American concrete delivery, mulch, topsoil, gravel, and bulk landscaping materials. Concrete is universally priced and ordered by the cubic yard in the US construction industry — a standard residential foundation might require 20–40 yd³, while a small driveway is around 3 yd³. The cubic yard is convenient for human-scale construction projects: a typical pickup truck bed holds about 2 yd³ of mulch. The cubic yard relates to the cubic foot (27 ft³ = 1 yd³), the cubic meter (1 yd³ ≈ 0.7646 m³), the gallon (1 yd³ ≈ 201.97 US gal), and the cubic inch (1 yd³ = 46,656 in³). Outside the United States and the United Kingdom, the cubic meter is dominant for the same purposes.

• Concrete ordering for US construction
• Gravel, sand and soil delivery in the US
• US freight and waste-disposal volumes