Cubic decimeter to Cubic foot
dm³
ft³
Conversion History
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Quick Reference Table (Cubic decimeter to Cubic foot)
| Cubic decimeter (dm³) | Cubic foot (ft³) |
|---|---|
| 0.5 | 0.01765733336053240847 |
| 1 | 0.03531466672106481694 |
| 2 | 0.07062933344212963388 |
| 5 | 0.17657333360532408471 |
| 10 | 0.35314666721064816942 |
| 20 | 0.70629333442129633885 |
About Cubic decimeter (dm³)
A cubic decimeter (dm³) is the volume of a cube with sides of 10 centimeters, exactly equal to one liter (1 dm³ = 1 L). This equivalence is exact and defined by the SI. The cubic decimeter appears in physics and chemistry textbooks as the formal SI expression of volume where liters are used in practice, and in engineering calculations requiring dimensional consistency. One dm³ of pure water at 4°C has a mass of exactly one kilogram.
A standard 1-liter water bottle contains exactly 1 dm³. A typical lunchbox has a volume of roughly 2–3 dm³.
About Cubic foot (ft³)
A cubic foot (ft³) is the volume of a cube with 1-foot sides, equal to approximately 28.317 liters or 7.48 US gallons. It is used in the United States for natural gas billing, refrigerator capacity, aquarium size, concrete orders, and shipping container dimensions. Refrigerators are rated in cubic feet of storage, natural gas consumption is billed in cubic feet, and HVAC airflow is measured in cubic feet per minute (CFM).
A full-size refrigerator is typically 18–28 ft³. Natural gas is billed in CCF (hundreds of cubic feet) in the US.
Cubic decimeter – Frequently Asked Questions
Is a cubic decimeter the same as a liter?
Yes, exactly. One cubic decimeter (dm³) is defined as equal to one liter (L). This is the foundational link between the cubic metric system and the liter-based system used in everyday measurement.
Why do textbooks use dm³ instead of liter?
In formal SI notation, volume is expressed in cubic meters or submultiples like dm³. The liter is accepted but technically non-SI. Chemistry texts use dm³ to maintain dimensional consistency, though liter and dm³ are completely interchangeable.
How many cubic decimeters are in a cubic meter?
There are 1,000 cubic decimeters in one cubic meter (m³), because 1 m = 10 dm and 10³ = 1,000. This also means 1 m³ = 1,000 liters.
What is the relationship between dm³ and cm³?
One cubic decimeter equals 1,000 cubic centimeters (cm³). Since 1 cm³ = 1 mL, it follows that 1 dm³ = 1 L = 1,000 mL — fully consistent within the metric system.
Where is the cubic decimeter used in practice?
The cubic decimeter appears primarily in scientific and educational contexts, particularly chemistry and physics where SI units are preferred. In everyday life, the liter is used instead — but they refer to the same volume.
Cubic foot – Frequently Asked Questions
How many liters are in a cubic foot?
One cubic foot equals approximately 28.317 liters. Since 1 foot = 30.48 cm, 1 ft³ = 30.48³ cm³ = 28,316.8 cm³ = 28.317 liters.
Why is natural gas measured in cubic feet in the US?
The US gas industry adopted cubic feet before metrication became widespread. Natural gas is billed in CCF (hundred cubic feet) or therms (≈ 100 ft³ by energy content). Metric countries use cubic meters.
What does cubic feet mean for refrigerators?
Refrigerator capacity is rated in cubic feet of internal storage. A compact dorm fridge is 1–4 ft³; a standard family fridge is 18–22 ft³; a large French door model can exceed 28 ft³.
What is CFM (cubic feet per minute)?
CFM measures volumetric airflow rate. HVAC systems, range hoods, and fans are rated in CFM. A typical home range hood requires 100–600 CFM; a whole-home HVAC system might move 2,000 CFM.
How many US gallons are in a cubic foot?
One cubic foot equals approximately 7.48 US liquid gallons. This is commonly used in plumbing, aquarium sizing, and pool volume calculations.