Cup (US Customary) to Gallon (Imperial) Converter
1 Cup (US Customary) is equal to 0.052042Gallon (Imperial)s (imp gal). To convert cup (us customary)s to gallon (imperial)s, multiply the value by 0.052042 or use the interactive formula breakdown and reference tables below.
Volume Converter
-- Step-by-Step Mathematical Derivation
To convert any quantity from Cup (US Customary) to Gallon (Imperial), multiply the quantity by the constant conversion factor 0.05204214.
To reverse the operation, multiply your Gallon (Imperial) figure by 19.2152 (or divide by 0.05204214).
- Identify the starting value in Cup (US Customary) (cup).
- Apply the exact linear conversion factor:
1 cup = 0.05204214 imp gal. - Multiply the input value by 0.05204214 to obtain the exact measurement in Gallon (Imperial) (imp gal).
- Verify precision against standard BIPM / NIST SP 811 statutory guidelines.
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Cite this mathematical formula and conversion factor in research papers and wikis
@misc{ai_unit_converter_cup_(us_customary)_to_gallon_(imperial),
author = {AI Unit Converters Standards Board},
title = {Exact Cup (US Customary) to Gallon (Imperial) Conversion Factor and Mathematical Derivation},
year = {2026},
howpublished = {\url{https://aiunitconverters.com/volume/cup_us-to-gal_uk}},
note = {Derived from NIST Special Publication 811 and BIPM SI Brochure}
}📊Cup (US Customary) to Gallon (Imperial) Conversion Tables
| 1cup | 0.052imp gal |
| 2cup | 0.1041imp gal |
| 5cup | 0.2602imp gal |
| 10cup | 0.5204imp gal |
| 15cup | 0.7806imp gal |
| 20cup | 1.0408imp gal |
| 25cup | 1.3011imp gal |
| 50cup | 2.6021imp gal |
| 75cup | 3.9032imp gal |
| 100cup | 5.2042imp gal |
| 250cup | 13.0105imp gal |
| 500cup | 26.0211imp gal |
| 1000cup | 52.0421imp gal |
| 5000cup | 260.2107imp gal |
| 10000cup | 520.4214imp gal |
| 1imp gal | 19.2152cup |
| 2imp gal | 38.4304cup |
| 5imp gal | 96.076cup |
| 10imp gal | 192.152cup |
| 15imp gal | 288.228cup |
| 20imp gal | 384.304cup |
| 25imp gal | 480.38cup |
| 50imp gal | 960.7599cup |
| 75imp gal | 1,441.1399cup |
| 100imp gal | 1,921.5199cup |
| 250imp gal | 4,803.7997cup |
| 500imp gal | 9,607.5994cup |
| 1000imp gal | 19,215.1988cup |
| 5000imp gal | 96,075.994cup |
| 10000imp gal | 192,151.9881cup |
❓ Frequently Asked Questions: Cup (US Customary) to Gallon (Imperial)
How do you convert Cup (US Customary)s to Gallon (Imperial)s?▼
1 Cup (US Customary) is equal to 0.052042 Gallon (Imperial)s. Multiply your input value in Cup (US Customary)s by 0.052042 to obtain the exact equivalent in Gallon (Imperial)s.
How many Gallon (Imperial)s are in 1 Cup (US Customary)?▼
There are exactly 0.052042Gallon (Imperial)s (imp gal) in 1 Cup (US Customary) (cup).
Are these calculations calibrated against official measurement standards?▼
Yes. All conversion factors on AI Unit Converters are calibrated and cross-verified against official BIPM SI Brochure (9th Edition), NIST SP 811, and ISO 80000 measurement metrology standards.