What is 15.5 cups to gallons?
Type a value in either box, and the answer shows it in the other unit as you type.
- Gallons (gal)
- 0.96875
15.5 cups = 0.96875 gal.
Gallons (gal): 0.96875. 15.5 cups = 0.96875 gal.
Gallons (gal) by cups (cup)
How to calculate
Converts cups (cup) to gallons (gal) and back, with the exact unit definitions.
Example with the default inputs (Cups (cup) 15.5): 15.5 cups = 0.96875 gal.
Formula: gal = cup × 0.0625 (the same as cup ÷ 16)
- 1 cup = 0.0625 gallons, from the exact definitions in NIST SP 811.
- Cups, ounces, tablespoons, teaspoons, pints, quarts, and gallons are US customary units: 1 US cup is 8 US fluid ounces.
- Exact on the typed decimals: at most 6 decimal places (6 significant digits below 0.0001), rounded half up.
Worked examples
Each example is checked against the calculator on every build.
- Cups (cup) 1 gives Gallons (gal) 0.0625.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Cups (cup) 16 gives Gallons (gal) 1.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Gallons (gal) 1 gives Cups (cup) 16.Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8
Other questions people ask
What is 15.5 cups in gallons?
15.5 cups is 0.96875 gal. The formula is gal = cup × 0.0625 (the same as cup ÷ 16).
How many gallons are in a cup?
1 cup is 0.0625 gallons, from the exact unit definitions (NIST SP 811).
How do I convert cups to gallons?
Multiply by 0.0625: gal = cup × 0.0625 (the same as cup ÷ 16). For example, 15.5 cups × 0.0625 = 0.96875 gal.
How do I convert gallons back to cups?
Multiply by 16, or type the gallons into the second box and the converter works it out. 1 gallon is 16 cups.