Cubic Feet to Quarts
Convert cubic feet (ft³) to quarts (qt). Both measure capacity and volume, and the conversion comes up in cooking, chemistry, fuel work.
The Formula
``
quarts = cubic feet × 29.9220779221
cubic feet = quarts × 0.0334201388889
`
One cubic feet is 29.9221 quarts, and one quart is 0.03342 cubic feet.
Conversion Table
| Cubic Feet | Quarts |
|---|---|
| 1 ft³ | 29.9221 qt |
| 2 ft³ | 59.8442 qt |
| 5 ft³ | 149.6104 qt |
| 10 ft³ | 299.2208 qt |
| 25 ft³ | 748.0519 qt |
| 50 ft³ | 1,496.1 qt |
| 100 ft³ | 2,992.21 qt |
| 500 ft³ | 14,961.04 qt |
| 1,000 ft³ | 29,922.08 qt |
The Other Direction
| Quarts | Cubic Feet |
|---|---|
| 1 qt | 0.03342 ft³ |
| 2 qt | 0.06684 ft³ |
| 5 qt | 0.167101 ft³ |
| 10 qt | 0.334201 ft³ |
| 25 qt | 0.835503 ft³ |
| 50 qt | 1.671 ft³ |
| 100 qt | 3.342 ft³ |
| 500 qt | 16.7101 ft³ |
| 1,000 qt | 33.4201 ft³ |
What Each Unit Is
Cubic Feet (ft³) — the volume of a cube one foot on each side, or 28.3168 litres. The imperial volume unit for freight, appliances and ventilation.
Quarts (qt) — a quarter of a US gallon, or 0.946352946 litres. From the Latin quartus, a fourth part of a gallon.
A Sense of Scale
A domestic fridge is 18–25 ft³- Airflow is rated in cubic feet per minute
- A US quart is just under a litre
- Ice cream is sold by the quart
- A quart is two pints
Doing It in Your Head
Multiply by 30. That is off by 0.26% — close enough to judge a
distance, a weight or a price, and not close enough to sign off on a drawing.
Exact Mental shortcut 299.2208 qt 300 qt 2,992.21 qt 3,000 qt
Precision
The factor 29.9220779221 is rounded. For engineering work carry more digits than the table above, and round only at the end — rounding at each step compounds.
In Code
`javascript
const cubicFootToQuart = (value) => value * 29.9220779221;
``
Where This Conversion Comes Up
- Cooking
- Chemistry
- Fuel
- Beverages
- Medicine
How Many Decimals Do You Need?
Rounding the factor costs accuracy, and how much depends on the factor. Converting 137 ft³ with the factor truncated at each decimal place:
| Decimals kept | Factor | 137 ft³ becomes | Error |
|---|---|---|---|
| 0 | 30 | 4,110 | 0.2604% |
| 1 | 29.9 | 4,096.3 | 0.0738% |
| 2 | 29.92 | 4,099.04 | 0.0069% |
| 3 | 29.922 | 4,099.31 | 0.0003% |
| 4 | 29.9221 | 4,099.33 | — |
The right number of significant figures is set by your input, not by the converter. If you measured cubic feet to three significant figures, the answer in quarts is only good to three — writing more digits claims precision the measurement never had.