Cubic foot to Cubic hectometer
ft³
hm³
Conversion History
| Conversion | Reuse | Delete |
|---|---|---|
| No conversion history to show. | ||
Quick Reference Table (Cubic foot to Cubic hectometer)
| Cubic foot (ft³) | Cubic hectometer (hm³) |
|---|---|
| 0.5 | 0.00000001415842329617 |
| 1 | 0.00000002831684659234 |
| 5 | 0.0000001415842329617 |
| 10 | 0.0000002831684659234 |
| 18 | 0.00000050970323866212 |
| 27 | 0.00000076455485799317 |
| 100 | 0.00000283168465923398 |
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.
About Cubic hectometer (hm³)
A cubic hectometer (hm³) is the volume of a cube with 100-meter sides, equal to one billion liters (10⁹ L). It is used in large-scale hydrology and reservoir engineering for dam and lake capacities, and is equivalent to one gigaliter (GL). One hm³ of water has a mass of one million tonnes. Reservoirs, aquifers, and annual river discharge volumes are commonly expressed in cubic hectometers, especially in Spanish-speaking countries and international water policy documents.
A large city's annual water supply might require 50–200 hm³. Lake Mead has a capacity of about 36,700 hm³.
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.
Cubic hectometer – Frequently Asked Questions
What is a cubic hectometer?
A cubic hectometer (hm³) is the volume of a cube 100 meters on each side, equal to one million cubic meters or one billion liters (one gigaliter). It is used in hydrology and large-scale water management.
How many cubic meters are in a cubic hectometer?
One cubic hectometer equals 1,000,000 m³. Since 1 hm = 100 m, 1 hm³ = 100³ m³ = 1,000,000 m³ = one billion liters.
Where is hm³ used in practice?
The cubic hectometer is standard for reservoir capacity in Spanish-speaking countries and international water treaties. Dam capacity tables routinely list volumes in hm³.
Is hm³ the same as a gigaliter?
Yes, 1 hm³ = 1,000,000 m³ = 1,000,000,000 liters = 1 gigaliter (GL). Gigaliter is common in Australian water reporting while hm³ is preferred in European and Latin American hydrology.
How does a cubic hectometer compare to Lake Mead?
Lake Mead, the largest US reservoir, has a capacity of roughly 36,700 hm³. A typical European river dam might hold 50–500 hm³. The scale makes hm³ the natural unit for expressing national water reserves.