A US customary cup is 236.5882365 milliliters.
Cups to Cubic feet Converter — cup to ft3
Convert Cup (cup) to Cubic foot (ft3) using the exact conversion factor (1 cup = 0.0083550347 cubic foot). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Cups to Cubic feet converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
A cubic foot is exactly 0.028316846592 cubic meters.
Result = input x 0.0002365882365 / 0.02831684659.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cups to Cubic feet
Cup and Cubic foot appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Cup is typically associated with united States (recipes and cooking measurement), while Cubic foot is typically associated with united States (construction, HVAC, natural gas billing).
Formula
cubic feet = cups × 0.00835503472222
This factor comes from each unit's defined relationship to the category's base unit: 1 cup equals 0.0002365882365 base units, and 1 cubic foot equals 0.028316846592 base units, so dividing one by the other gives the direct cup-to-cubic foot factor of 0.00835503472222.
Simple example
1 cup × 0.008355034722 = 0.0083550347 ft3
1 cup = 0.0083550347 cubic feet.
Real-world example
10 cup × 0.008355034722 = 0.0835503472 ft3
10 cups = 0.0835503472 cubic feet.
Conversion table
| Cup (cup) | Cubic foot (ft3) |
|---|---|
| 1 cup | 0.0083550347 ft3 |
| 5 cup | 0.0417751736 ft3 |
| 10 cup | 0.0835503472 ft3 |
| 25 cup | 0.2088758681 ft3 |
| 50 cup | 0.4177517361 ft3 |
| 100 cup | 0.8355034722 ft3 |
Reverse conversion: Cubic foot to Cup
0.0083550347 ft3 × 119.6883117 = 0.9999999973 cup
0.0083550347 cubic feet = 0.9999999973 cups.
cups = cubic feet × 119.688311688
For a page dedicated to this direction, see Cubic foot to Cup.
Cup vs. Cubic foot
| Aspect | Cup | Cubic foot |
|---|---|---|
| Family | US customary unit (culinary) | US/imperial customary unit |
| Typical use | US recipe and cooking measurement | US natural gas utility billing (often in hundreds or thousands of cubic feet) |
| Where it's used | United States (recipes and cooking measurement) | United States (construction, HVAC, natural gas billing) |
Understanding the Cup
Cup (cup) measures volume. The US customary cup used in cooking is defined as exactly 240 milliliters (a rounded culinary standard, not the older 236.588 mL legal cup). It is classified as a US customary unit (culinary).
Where it's used: United States (recipes and cooking measurement)
Cooking cup vs. legal US cup. US recipes commonly round the cup to 240 mL for convenience, while the precise legal US cup (used to derive fluid ounces, pints, etc.) is 236.588 mL — a small but sometimes noticeable difference in precise baking.
Uses of the Cup today
- US recipe and cooking measurement
- Nutrition labeling serving sizes
- Baking, where volume-based flour/sugar measurement is still common in the US
History of the Cup
The cup as a cooking measure grew out of household and community cookbook conventions in 19th-century America, standardizing what had been ad hoc measurements ('a teacup of flour') into a fixed volume.
The US FDA uses a rounded 240 mL 'metric cup' for nutrition labeling purposes, distinct from the slightly smaller legal/customary cup (236.588 mL, exactly 1/16 of a US gallon) used elsewhere.
Historical origin. Cup was not the invention of a single named person; it developed through the process described above.
Understanding the Cubic foot
Cubic foot (ft3) measures volume. A cubic foot is exactly 0.028316846592 cubic meters, derived from the 1959 international foot. It is classified as a US/imperial customary unit.
Where it's used: United States (construction, HVAC, natural gas billing)
Uses of the Cubic foot today
- US natural gas utility billing (often in hundreds or thousands of cubic feet)
- HVAC airflow and building-volume calculations
- Lumber, concrete, and construction material estimation in the US
History of the Cubic foot
The cubic foot, like the square foot, follows from the standardized foot (exactly 0.3048 m since the 1959 international agreement) rather than having a separate historical definition.
Historical origin. Cubic foot was not the invention of a single named person; it developed through the process described above.
Cup — sources
- US FDA — Reference Amounts Customarily Consumed — Uses the 240 mL rounded cup for nutrition labeling.
Cubic foot — sources
- NIST — International yard and pound (1959) — Basis for the modern foot and its derived volume unit.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic feet are in 1 cup?
1 cup equals 0.0083550347 cubic feet, using the exact defined conversion factor rather than an estimate.
How do I convert cup to cubic foot?
Multiply the cup value by 0.008355034722. The converter above does this instantly to whatever precision you set.
How do I convert cubic foot back to cup?
Use the reverse factor: 1 cubic foot equals 119.6883117 cups. You can also use the swap control in the converter above to flip the direction instantly.
What is a cup?
Cup (cup) measures volume. The US customary cup used in cooking is defined as exactly 240 milliliters (a rounded culinary standard, not the older 236.588 mL legal cup). It is classified as a US customary unit (culinary).
What is a cubic foot?
Cubic foot (ft3) measures volume. A cubic foot is exactly 0.028316846592 cubic meters, derived from the 1959 international foot. It is classified as a US/imperial customary unit.
Is the cup to cubic foot conversion exact?
Yes. A cubic foot is exactly 0.028316846592 cubic meters, derived from the 1959 international foot. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between cooking cup vs. legal us cup?
US recipes commonly round the cup to 240 mL for convenience, while the precise legal US cup (used to derive fluid ounces, pints, etc.) is 236.588 mL — a small but sometimes noticeable difference in precise baking.
Where is the cup still used today?
United States (recipes and cooking measurement)