Cubic Feet Converter
Unit ConversionConvert cubic feet to cubic yards, cubic inches, US gallons, liters, milliliters and cubic meters at once, and back. Every factor is exact.
Cubic Feet
Imperial / US
Metric
1 Cubic Foot = 0.037037 Cubic Yards ⟷ 1 Cubic Yard = 27 Cubic Feet
1 Cubic Foot = 1,728 Cubic Inches ⟷ 1 Cubic Inch = 0.000578704 Cubic Feet
1 Cubic Foot = 7.480519 Gallons ⟷ 1 Gallon = 0.133681 Cubic Feet
1 Cubic Foot = 28.316847 Liters ⟷ 1 Liter = 0.0353147 Cubic Feet
1 Cubic Foot = 28,316.846592 Milliliters ⟷ 1 Milliliter = 0.0000353147 Cubic Feet
1 Cubic Foot = 0.0283168 Cubic Meters ⟷ 1 Cubic Meter = 35.314667 Cubic Feet
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Unit Conversion calculators
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SponsoredThis cubic feet converter shows a volume in cubic feet next to cubic yards, cubic inches, US gallons, liters, milliliters and cubic meters. Type a value into any box and every other box updates as you type, so it works in either direction: from cubic yards of soil to cubic feet of bags, or from a fridge's liters to its cubic feet.
Every factor here is fixed by definition. The foot is exactly 0.3048 meter, a yard is 3 feet, and the US gallon is 231 cubic inches, so the converter never relies on a measured or rounded value. Results are rounded only on screen.
If you are starting from a length, width and height rather than a volume, multiply the three sides in feet first, or use one of the volume calculators linked below. The gallons here are US liquid gallons; a UK imperial gallon is about 20% larger.
What Is a Cubic Foot
A cubic foot is the space of a cube 1 foot (12 inches) on each side. It holds 12 × 12 × 12 = 1,728 cubic inches, and since a foot is exactly 0.3048 meter it is exactly 28.316846592 liters. The cubic foot is the usual unit in the US for refrigerator and freezer capacity, storage units, moving trucks, firewood, natural gas and bagged soil or mulch.
How Big Is a Cubic Foot
Picture a box 12 inches long, 12 inches wide and 12 inches tall. It holds about 7.48 US gallons of liquid. To find the cubic feet of a box, room or bed from its sides, multiply length × width × height in feet; the Cubic Yards Calculator does this and converts the result for bulk orders, and the Concrete Volume Calculator does it for a slab.
How Many Cubic Feet in a Cubic Yard
There are exactly 27 cubic feet in a cubic yard. A yard is 3 feet, so a cubic yard is a cube 3 feet on each side: 3 × 3 × 3 = 27, as NIST Handbook 44 lists it. Soil, mulch, gravel and concrete are sold by the cubic yard, while bags are labeled in cubic feet, so a cubic yard of mulch is 27 one-cubic-foot bags, or 13.5 two-cubic-foot bags.
How Many Gallons in a Cubic Yard
A cubic yard holds about 201.97 US gallons: 27 cubic feet of about 7.48 gallons each. The exact value is 46,656 ÷ 231, the cubic yard's cubic inches divided by the gallon's. The Mulch and Topsoil Calculator works out the cubic yards for a bed from its area and depth.
Cubic Feet Conversion Chart
Common amounts of cubic feet in the other units on this page, rounded to the decimal places shown.
| Cubic Feet | Cubic Yards | Gallons | Liters | Cubic Meters |
|---|---|---|---|---|
| 0.5 ft³ | 0.0185 yd³ | 3.74 gal | 14.158 L | 0.01416 m³ |
| 2 ft³ | 0.0741 yd³ | 14.961 gal | 56.634 L | 0.05663 m³ |
| 3 ft³ | 0.1111 yd³ | 22.442 gal | 84.951 L | 0.08495 m³ |
| 5 ft³ | 0.1852 yd³ | 37.403 gal | 141.584 L | 0.14158 m³ |
| 10 ft³ | 0.3704 yd³ | 74.805 gal | 283.168 L | 0.28317 m³ |
| 25 ft³ | 0.9259 yd³ | 187.013 gal | 707.921 L | 0.70792 m³ |
| 50 ft³ | 1.8519 yd³ | 374.026 gal | 1,415.842 L | 1.41584 m³ |
| 100 ft³ | 3.7037 yd³ | 748.052 gal | 2,831.685 L | 2.83168 m³ |
How Much Does a Cubic Foot of Water Weigh
About 62.3 pounds at room temperature (20 °C), and about 62.4 pounds near 4 °C, where water is densest. These figures use the density of water from the NIST Chemistry WebBook, 998.207 kg per cubic meter at 20 °C and 999.975 at 4 °C. A cubic foot of water is 28.27 kg at 20 °C.
Weight depends on what fills the space. The Cubic Feet to Pounds Converter gives the weight of a cubic foot of water, milk, flour, sugar, honey or butter.
Single Volume Conversions
Single conversions between two of the units on this page, one page per pair of units, each with its own table, formula and examples.
- Liters to Gallons Converter: 1 gallon = 3.785411784 liters
- Gallons to Milliliters Converter: 1 gallon = 3,785.411784 milliliters
- Cubic Feet to Cubic Meters Converter: 1 cubic meter is about 35.314667 cubic feet
- Cubic Feet to Gallons Converter: 1 cubic foot is about 7.480519 gallons
- Cubic Inches to Gallons Converter: 1 gallon = 231 cubic inches
- Liters to Cubic Meters Converter: 1 cubic meter = 1,000 liters
- Cubic Feet to Liters Converter: 1 cubic foot = 28.316846592 liters
- Cubic Inches to Cubic Feet Converter: 1 cubic foot = 1,728 cubic inches
- Cubic Inches to Liters Converter: 1 liter is about 61.023744 cubic inches
- Cubic Meters to Gallons Converter: 1 cubic meter is about 264.172052 gallons
- Milliliters to Cubic Meters Converter: 1 cubic meter = 1,000,000 milliliters
- Milliliters to Liters Converter: 1 liter = 1,000 milliliters
Other Volume Converters
Each converter below shows one volume in several units at once, starting from a different unit.
- Cubic Meter Converter: cubic meters to liters, milliliters, cubic feet, cubic yards and gallons at once
- Gallon Converter: gallons to quarts, pints, cups, fluid ounces, liters and cubic feet at once
- Volume Converter: any volume in every unit at once, from milliliters to cubic yards, including UK imperial units
Frequently Asked Questions
How many cubic feet is 3 cubic yards?
81 cubic feet, at 27 cubic feet per cubic yard.
How many cubic yards is 200 square feet at 4 inches deep?
About 2.4691 cubic yards. Four inches is a third of a foot, so the volume is about 66.67 cubic feet, and dividing by 27 gives the cubic yards.
How many 2.2 cubic foot bags make a cubic yard?
About 12.27 bags, so you would buy 13 to fill a full cubic yard.
Is a cubic foot the same as a square foot?
No. A square foot measures area (length × width) and a cubic foot measures volume (length × width × height). To go from square feet to cubic feet you need a depth: 120 square feet at 6 inches deep is 60 cubic feet.
How many liters is 20 cubic feet?
About 566.34 liters, the size of a large refrigerator.
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