Cup (US) to Gallon (US) (US cup to US gal)
Result
0.0625 Gallon (US)
Formula
US gal = US cup × 0.0625
1 US cup = 0.0625 US gal, and 1 US gal = 16 US cup.
The litre is exactly 1 dm³ (0.001 m³). The US gallon is defined as 231 cubic inches, which makes it exactly 3.785411784 L; quarts, pints, cups and fluid ounces are fixed fractions of it.
Worked examples
- 1 US cup × 0.0625 = 0.0625 US gal
- 10 US cup × 0.0625 = 0.625 US gal
- 100 US cup × 0.0625 = 6.25 US gal
Common mistakes
- US and UK (imperial) measures share names but not sizes: the imperial gallon is 4.54609 L (20% larger), the imperial pint 568 mL and the imperial fluid ounce 28.41 mL.
- This converter uses US customary volumes. A US cup is 236.59 mL, a metric cup 250 mL, and US nutrition labels round a cup to 240 mL.
- US dry measures (dry pint, bushel) are a separate system and are not the same as liquid pints.
Cup (US) to Gallon (US) table
| Cup (US) (US cup) | Gallon (US) (US gal) |
|---|---|
| 1 | 0.0625 |
| 2 | 0.125 |
| 5 | 0.3125 |
| 10 | 0.625 |
| 20 | 1.25 |
| 50 | 3.125 |
| 100 | 6.25 |
| 1,000 | 62.5 |
The units
- Cup (US) (US cup)
- 1 Cup (US) = 0.000236588237 Cubic Meter.
- Gallon (US) (US gal)
- The US liquid gallon: 231 cubic inches, exactly 3.785411784 L.
Sources for these factors
- Handbook 44 (2024), Appendix C: General Tables of Units of Measurement — NIST
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
- 21 CFR 101.9 (nutrition labeling: household measure equivalents) — U.S. FDA / eCFR
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy