15 Gallon (US) to Cup (US)
Quick answer
15 Gallon (US) (gal) equals
240 cup
To convert 15 Gallon (US)s to Cup (US)s, multiply by 16. Therefore, 15 Gallon (US) (gal) equals 240 Cup (US) (cup).
Formula: cup = gal × 16. Calculation: 15 × 16 = 240 cup.
Convert Gallon (US) (gal) to Cup (US) (cup) online with our free unit converter. In volume, 1 gal = 16 cup. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Gallon (US) to Cup (US)
- Step 1 — start with the formula. cup = gal × 16
- Step 2 — substitute your figure. 15 gal × 16
- Step 3 — read the result. 15 gal = 240 cup
- Step 4 — check it in reverse. gal = cup × 0.0625 returns 15 gal, which matches the figure you started with.
Volume Converter
40 units available
15 gal = 240 cup
Formula:
cup = gal × 16With your value: 15 gal = 240 cup
How big is that?
Everyday references on a logarithmic scale, all expressed in gallon (us) so you can sanity-check the result.
Other Gallon (US) to Cup (US) conversions
Gallon (US) to Cup (US) Conversion Table
| Gallon (US) (gal) | Cup (US) (cup) |
|---|---|
| 0.5 | 8 |
| 1 | 16 |
| 2 | 32 |
| 5 | 80 |
| 10 | 160 |
| 15 | 240 |
| 20 | 320 |
| 25 | 400 |
| 50 | 800 |
| 100 | 1,600 |
| 250 | 4,000 |
| 500 | 8,000 |
| 1000 | 16,000 |
Cup (US) to Gallon (US) Conversion Table
| Cup (US) (cup) | Gallon (US) (gal) |
|---|---|
| 0.5 | 0.03125 |
| 1 | 0.0625 |
| 2 | 0.125 |
| 5 | 0.3125 |
| 10 | 0.625 |
| 15 | 0.9375 |
| 20 | 1.25 |
| 25 | 1.5625 |
| 50 | 3.125 |
| 100 | 6.25 |
| 250 | 15.625 |
| 500 | 31.25 |
| 1000 | 62.5 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Gallon (US) (gal)
Volume
The US liquid gallon is exactly 231 cubic inches = 3.785 411 784 L.
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Cup (US) (cup)
Volume
Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Gallon (US) to Cup (US)
To convert from Gallon (US) (gal) to Cup (US) (cup), multiply the value by 16.
Formula: cup = gal × 16
Reverse: gal = cup × 0.0625
Step-by-Step Example
- Start with your value in Gallon (US). For example: 5 gal
- Multiply by the conversion factor: 5 x 16
- The result is: 80 cup
Gallon (US) and Cup (US) Relationship
Both Gallon (US) and Cup (US) belong to the US Customary / Imperial system, making this an intra-system conversion within volume. Since 1 Gallon (US) equals approximately 16 Cup (US)s, the Gallon (US) represents a larger unit interval than the Cup (US). Understanding the relationship between Gallon (US) and Cup (US) is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Gallon (US)
The US gallon equals approximately 3.785 liters and is the standard unit for fuel and large liquid volumes in the United States.
Fun Fact: The US gallon is about 20% smaller than the imperial (UK) gallon.
Common uses of Gallon (US): fuel (US), beverages, swimming pools.
About Cup (US)
The US cup equals approximately 236.6 mL and is a standard cooking measurement in the United States.
Common uses of Cup (US): baking, cooking, recipes.
Frequently Asked Questions
- What is 15 Gallon (US) in Cup (US)?
- 15 Gallon (US) equals 240 Cup (US).
- How many Cup (US)s are in 1 Gallon (US)?
- There are exactly 16 Cup (US)s in 1 Gallon (US). This means the conversion factor from Gallon (US) to Cup (US) is 16.
- What is the formula to convert Gallon (US) to Cup (US)?
- The formula to convert Gallon (US) to Cup (US) is: cup = gal × 16. For example, to convert 10 Gallon (US)s to Cup (US)s, you would multiply 10 by 16.
- What is a Gallon (US)?
- The US gallon equals approximately 3.785 liters and is the standard unit for fuel and large liquid volumes in the United States.
- What is a Cup (US)?
- The US cup equals approximately 236.6 mL and is a standard cooking measurement in the United States.
- What are the common uses of Gallon (US)?
- The Gallon (US) is commonly used in fuel (US), beverages, swimming pools.
Related Volume Conversions
Cite this page
UnitConvertLab. (2026). 15 Gallon (US) to Cup (US). UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/15-gallon_us-to-cup_us