Convert 100 cup to impgal

How to convert US cups to imperial gallons

1. Formula: imperial gallons = US cups × 0.05204214
2. Put in the value: 100 US cups.
3. Result: 5.204214 imperial gallons.

US cups to imperial gallons table

Converting the other way: imperial gallons to US cups

US cups = imperial gallons × 19.215199. So 5.204214 imperial gallons is back to 100 US cups; one imperial gallon is 19.215199 US cups. See the imperial gallons to US cups table.

Quick estimate in your head

For a rough answer, multiply by about 0.05: 100 × 0.05 ≈ 5 impgal, against the exact 5.204214 impgal (3.9% out). Good enough to check that a calculated result is sensible.

Common mistakes

The usual slip is using the factor the wrong way round. A US cup is smaller than a imperial gallon, so the number of imperial gallons must come out smaller than the number of US cups. If your answer goes the other way, divide instead of multiplying.

About the units

US cup (cup) and imperial gallon (impgal) are both units of volume. One US cup equals 0.05204214 imperial gallons, and one imperial gallon equals 19.215199 US cups. Results on this page are rounded for display; the conversion itself uses the exact definitions.

Volume conversions come up in recipes, fuel economy, drink and bottle sizes, garden and pool water, and engine sizes.

100 US cups in other units

The most readable unit for this amount is imperial gallons (5.204214).

• 23,658.82 ml
• 23.658824 l
• 0.02365882 m3
• 4,800 tsp
• 1,600 tbsp
• 800 floz
• 50 pt
• 25 qt
• 6.25 gal
• 5.204214 impgal

How this answer was calculated

The result is worked out from the numbers in this page's address when the page is opened, using exact arithmetic wherever possible and rounding only for display. Nothing is copied from a printed table. If you think an answer is wrong, please tell us through the contact page and we will check it.

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