how many ounces in a gallon


how many ounces in a gallon

how many ounces in a gallon how many ounces in a gallon

how many ounces (oz) there are in a gallon of water depends on where in the world you are. You see, the US liquid gallon measures less (3.785 liters) than the UK imperial gallon (4.546 litres). You should probably bear this in mind when thinking about daily water intake because there’s a big difference between the two (you could be drinking 3/4 of a litre more water if you use the UK imperial gallon conversion). If you want the conversion in cups, by the way, do take a look at this post on gallons and cups.

When converting to ounces (fluid ounces), you need to bear in mind that the US fluid ounce measures more than the UK imperial fluid ounce. The US fluid ounce measures 29.5735mL . By comparison, the UK (imperial) fluid ounce measures 28.4131mL. To assist you, I’ve included the two conversions of gallons to ounces below.

  • 1 Gallon (US, Fluid) = 128 Ounces (US, Fluid)

  • 1 Gallon (UK, Fluid) = 160 Ounces (UK, Fluid)

Gallons to ounces conversion tables

I’ve included two table of conversions to help you see how many fluid ounces there are in a gallon – one using US and one using UK measurements. For converting a specific number of gallons to ounces, use our converter tool.

Gallons (US) Ounces (US) Liters
1 128 3.785
2 256 7.571
3 384 11.356
4 512 15.142
5 640 18.927
6 768 22.712
7 896 26.498
8 1024 30.283
9 1152 34.069
10 1280 37.854
11 1408 41.64
12 1536 45.425
13 1664 49.21
14 1792 52.996
15 1920 56.781
Gallons (UK) Ounces (UK) Litres
1 160 4.546
2 320 9.092
3 480 13.638
4 640 18.184
5 800 22.73
6 960 27.277
7 1120 31.823
8 1280 36.369
9 1440 40.915
10 1600 45.461
11 1760 50.007
12 1920 54.553
13 2080 59.099
14 2240 63.645
15 2400 68.191

 

If you would like some more help with converting between gallons and ounces, give our liquid volume converter a try. We also have an article about how to convert cups to ounces and vice-versa.

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