Convert US liquid gallons (gal (US)) to imperial gallons (gal (UK)).
Volume converter
Instant conversion
Edit either value. Decimals and scientific notation supported.
1
gal (US)
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LitreL
MillilitremL
Cubic metrem³
Cubic centimetrecm³
Cubic footft³
Cubic inchin³
US liquid gallongal (US)
Imperial gallongal (UK)
US fluid ouncefl oz (US)
Imperial fluid ouncefl oz (UK)
US customary cupcup (US)
Metric cupcup (metric)
US liquid pintpt (US)
US liquid quartqt (US)
Imperial pintpt (UK)
Imperial quartqt (UK)
US customary teaspoontsp (US)
US customary tablespoontbsp (US)
Metric teaspoon (5 mL)tsp (metric)
Metric tablespoon (15 mL)tbsp (metric)
Cubic yardyd³
Imperial gillgi (UK)
Imperial peckpk (UK)
Imperial bushelbu (UK)
Imperial fluid drachmfl dr (UK)
Imperial minimminim (UK)
No units found. Try a name or symbol.
0.8326741846
gal (UK)
esc
LitreL
MillilitremL
Cubic metrem³
Cubic centimetrecm³
Cubic footft³
Cubic inchin³
US liquid gallongal (US)
Imperial gallongal (UK)
US fluid ouncefl oz (US)
Imperial fluid ouncefl oz (UK)
US customary cupcup (US)
Metric cupcup (metric)
US liquid pintpt (US)
US liquid quartqt (US)
Imperial pintpt (UK)
Imperial quartqt (UK)
US customary teaspoontsp (US)
US customary tablespoontbsp (US)
Metric teaspoon (5 mL)tsp (metric)
Metric tablespoon (15 mL)tbsp (metric)
Cubic yardyd³
Imperial gillgi (UK)
Imperial peckpk (UK)
Imperial bushelbu (UK)
Imperial fluid drachmfl dr (UK)
Imperial minimminim (UK)
No units found. Try a name or symbol.
CONVERSION
1 gal (US) ≈ 0.8326741846 gal (UK)
6 significant figures
10 significant figures
15 significant figures
Precision changes displayed rounding, not calculation accuracy.
FORMULAgal (UK) = gal (US) × 0.832674184628989
FORMULA & EXAMPLES
How to convert US liquid gallons to imperial gallons
gal (UK) = gal (US) × 0.832674184628989
Multiply the gal (US) reading by 0.832674184628989.
Worked examples
1 gal (US) ≈ 0.8326741846 gal (UK)
1 × 0.832674184628989 ≈ 0.8326741846
5 gal (US) ≈ 4.163370923 gal (UK)
5 × 0.832674184628989 ≈ 4.163370923
Frequently asked questions
Why do UK and US capacity readings differ?
The Imperial gallon is 4.54609 L, while the US liquid gallon is 3.785411784 L. Each system has 8 pints and 4 quarts per gallon. An Imperial gallon contains 160 Imperial fluid ounces; a US gallon contains 128 US fluid ounces.
US liquid gallons to imperial gallons table
Fixed reference · US liquid gallon to Imperial gallon
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
US liquid gallon (gal (US))
Imperial gallon (gal (UK))
0
0
0.1
0.08326741846
0.5
0.4163370923
1
0.8326741846
2
1.665348369
5
4.163370923
10
8.326741846
25
20.81685462
50
41.63370923
100
83.26741846
1000
832.6741846
Table results use 10 significant figures; decimal formula coefficients use up to 15. Calculations use the unit definitions before rounding. Extra digits do not improve measurement accuracy.