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US liquid gallons to Imperial gallons

1 US gal ≈ 0.8327 UK gal. Edit either value to convert instantly.

1 US gal≈UK gal
= 16 cup + 0 tbsp + 0 tsp · ≈ 3.78541 L

Conversion formula

UK gal = US gal × (3.785411784) × (100,000 / 454,609)

1 US gal ≈ 0.832674 UK gal

US liquid gallon (US gal)

A US liquid gallon is exactly 3.785411784 L, or 231 cubic inches; the imperial gallon is a different unit.

Source: NIST SP 811, Appendix B.9 — conversion factors

imperial gallon (UK gal)

One imperial gallon equals exactly 4.54609 L.

Source: UK Weights and Measures Act 1985, Schedule 1

Conversion table

US galUK gal
≈ 0.832674
≈ 1.66535
≈ 4.16337
≈ 8.32674
≈ 12.4901
≈ 16.6535
≈ 20.8169
≈ 24.9802
≈ 33.307
≈ 37.4703
US galUK gal
≈ 41.6337
≈ 49.9605
≈ 58.2872
≈ 66.6139
≈ 74.9407
≈ 83.2674
≈ 124.901
≈ 133.228
≈ 141.555
≈ 149.881

Frequently asked questions

How many imperial gallons are in 1 US liquid gallon?

1 US gal ≈ 0.8327 UK gal. UK gal = US gal × (3.785411784) × (100,000 / 454,609)

How do I convert US gal to UK gal?

UK gal = US gal × (3.785411784) × (100,000 / 454,609)

Is 1 US liquid gallon bigger than 1 imperial gallon?

1 US gal ≈ 0.8327 UK gal.

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