US Gallons to Imperial Gallons
1 us gallon = 0.832674 imperial gallons (imp gal)
Convert us gallons to imperial gallons instantly. 1 us gallon = 0.832674 imperial gallons. Free, accurate, with conversion table and formula.
US Gallon (gal)
Imperial Gallon (imp gal)
| Unit | 1 gal equals |
|---|---|
| Milliliter (ml) | 3,785.41 |
| Liter (L) | 3.78541 |
| Cubic Meter (m³) | 0.00378541 |
| Cubic Centimeter (cm³) | 3,785.41 |
| US Teaspoon (tsp) | 768 |
| US Tablespoon (tbsp) | 255.999 |
| US Fluid Ounce (fl oz) | 128 |
| US Cup (cup) | 15.7725 |
| US Pint (pt) | 8 |
| US Quart (qt) | 4 |
| US Gallon (gal) | 1 |
| Imperial Gallon (imp gal) | 0.832674 |
How to convert us gallons to imperial gallons
- 1Take your value in us gallons (gal).
- 2Multiply by 0.832674.
- 3The result is your value in imperial gallons (imp gal).
US Gallons to Imperial Gallons conversion table
| US Gallons (gal) | Imperial Gallons (imp gal) |
|---|---|
| 1 | 0.832674 |
| 2 | 1.66535 |
| 5 | 4.16337 |
| 10 | 8.32674 |
| 25 | 20.8168 |
| 50 | 41.6337 |
| 100 | 83.2674 |
| 250 | 208.168 |
| 500 | 416.337 |
| 1,000 | 832.674 |
Frequently asked
How many imperial gallons are in a us gallon?
1 us gallon equals 0.832674 imperial gallons (imp gal).
How do I convert us gallons to imperial gallons?
Multiply the number of us gallons by 0.832674 to get imperial gallons.
What is 10 us gallons in imperial gallons?
10 gal equals 8.327 imp gal.
What is 100 us gallons in imperial gallons?
100 gal equals 83.27 imp gal.
How do I convert imperial gallons back to us gallons?
Multiply imperial gallons by 1.20095 (the reciprocal) or use the swap button above.
Where you'll actually use this
Volume measures three-dimensional capacity — how much liquid a container holds or how much space an object occupies. Metric uses liters and milliliters; imperial uses gallons, quarts, pints, cups, and fluid ounces.
- Cooking
US recipes use cups and tablespoons; metric recipes use ml. A US cup is 236.6 ml — not 250 ml as in metric cups.
- Fuel
Pump prices show gallons in the US, liters almost everywhere else.
- Beverages
A US fluid ounce (29.57 ml) is slightly smaller than a UK fluid ounce (28.41 ml).
Common mistakes to avoid
- US gallon ≠ UK gallon
A US gallon is 3.785 L, a UK (imperial) gallon is 4.546 L — about 20% larger.
- Cups aren't universal
US cup = 236.6 ml. UK cup = 284 ml. Metric cup = 250 ml. Match the recipe origin.
Did you know?
At 4 °C exactly one liter of pure water weighs one kilogram — the original metric definition.
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