---
title: "Imperial gallons to US cups — imp gal to cup converter"
description: "1 imperial gallon = 19.2152 US cups. Convert imperial gallons to US cups with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/imperial-gallons-to-cups/
site: "At One Place"
---

# Imperial gallons to US cups

**1 imperial gallon in US cups: 1 imp gal = 19.2152 cup**

cup = imp gal × 19.21519881

To convert imperial gallons to US cups, multiply by 19.21519881. The table below gives the values people look up most often, and the converter works for any number.

## Imperial gallons to US cups table

*Common imperial gallon values converted to US cups.*

| Imperial gallons | US cups |
| --- | --- |
| 1 imp gal | 19.2152 |
| 2 imp gal | 38.4304 |
| 3 imp gal | 57.6456 |
| 4 imp gal | 76.8608 |
| 5 imp gal | 96.07599 |
| 10 imp gal | 192.152 |
| 15 imp gal | 288.228 |
| 20 imp gal | 384.304 |
| 25 imp gal | 480.38 |
| 30 imp gal | 576.456 |
| 40 imp gal | 768.608 |
| 50 imp gal | 960.7599 |
| 75 imp gal | 1,441.1399 |
| 100 imp gal | 1,921.5199 |
| 250 imp gal | 4,803.7997 |
| 500 imp gal | 9,607.5994 |
| 1,000 imp gal | 19,215.199 |

## How the conversion works

The relationship is cup = imp gal × 19.21519881. Both units measure volume, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

> Imperial gallon: UK gallon.

> US cup: US legal cup is 240 mL; the customary cup used here is 236.588 mL.

## Common questions

### How many US cups are in one imperial gallon?

One imperial gallon equals 19.2152 US cups. cup = imp gal × 19.21519881.

### How do you convert imperial gallons to US cups?

Use cup = imp gal × 19.21519881. So 10 imp gal is 192.152 cup.

### How many imperial gallons are in one US cup?

One US cup equals 0.052042 imperial gallons, which is the reverse of the conversion above.

### Is there more than one kind of imperial gallon?

UK gallon. US legal cup is 240 mL; the customary cup used here is 236.588 mL.

## Related pages

- [US cups to Imperial gallons](https://atoneplace.net/convert/cups-to-imperial-gallons/)
- [Imperial gallons to Liters](https://atoneplace.net/convert/imperial-gallons-to-liters/)
- [Imperial gallons to Milliliters](https://atoneplace.net/convert/imperial-gallons-to-ml/)
- [Imperial gallons to Cubic meters](https://atoneplace.net/convert/imperial-gallons-to-cubic-meters/)
- [Imperial gallons to US gallons](https://atoneplace.net/convert/imperial-gallons-to-gallons/)
- [Imperial gallons to US quarts](https://atoneplace.net/convert/imperial-gallons-to-quarts/)
- [Imperial gallons to US pints](https://atoneplace.net/convert/imperial-gallons-to-pints/)
- [Imperial gallons to US fluid ounces](https://atoneplace.net/convert/imperial-gallons-to-fl-oz/)
- [Imperial gallons to Tablespoons](https://atoneplace.net/convert/imperial-gallons-to-tablespoons/)
- [Imperial gallons to Teaspoons](https://atoneplace.net/convert/imperial-gallons-to-teaspoons/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)