What is 1 gallons to cups?
Type either value and the other one updates as you type.
- Cups (cup)
- 16
1 gal = 16 cup.
Cups (cup): 16. 1 gal = 16 cup.
Cups (cup) by gallons (gal)
How to calculate
Converts gallons (gal) to cups (cup) and back, with the exact unit definitions.
Example with the default inputs (Gallons (gal) 1): 1 gal = 16 cup.
Formula: cup = gal × 16
- 1 gallon = 16 cups, from the exact definitions in NIST SP 811.
- Cups, ounces, tablespoons, pints, quarts, and gallons are US customary units: 1 US cup is 8 US fluid ounces.
- The answer shows at most 6 decimal places; the calculation keeps full precision.
Worked examples
Each example is checked against the calculator on every build.
- Gallons (gal) 1 gives Cups (cup) 16.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Gallons (gal) 3 gives Cups (cup) 48.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Cups (cup) 48 gives Gallons (gal) 3.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
Other questions people ask
What is 1 gallons in cups?
1 gal is 16 cup. The formula is cup = gal × 16.
How many cups are in a gallon?
1 gallon is 16 cups, from the exact unit definitions (NIST SP 811).
How do I convert gallons to cups?
Multiply by 16: cup = gal × 16. For example, 1 gal × 16 = 16 cup.
How do I convert cups back to gallons?
Multiply by 0.0625, or type the cups into the second box and the converter works it out. 1 cup is 0.0625 gallons.