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Ounces to US Gallons Converter

Convert ounces (avoirdupois) (oz) to US gallons (gal), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Convert cups and spoons to grams or ounces (or back) for a chosen ingredient, using USDA weights, or enter your own density.

The quantity to convert. Fractions such as 3/4 or 1 1/2 are accepted.
Unit you want. Swap exchanges the two units.
Weight per cup differs by ingredient and by how it is measured (sifted, packed, chopped). Each option names the assumption used; choose Other to enter your own density.
Only used when the ingredient is Other: the weight per volume of your ingredient.
Result
Converted amount
0.00748915 gal
Density used
1 g/mL (USDA FDC 174158, 1 ml = 1 g)

1 ounces (avoirdupois) of water = 0.00748915 US gallons. Weights for cups and spoons vary with how the ingredient is measured, so treat this as a close estimate.

Show the the same amount in other volume units (17 rows)
The same amount in other volume units
UnitAmount
US teaspoons5.75167
US tablespoons1.91722
US fluid ounces0.958611
US cups0.119826
US liquid pints0.0599132
US liquid quarts0.0299566
US nutrition-label fluid ounces0.944984
US nutrition-label cups0.118123
milliliters28.3495
liters0.0283495
metric teaspoons5.6699
metric tablespoons1.88997
metric cups0.113398
imperial fluid ounces0.997764
imperial pints0.0498882
imperial quarts0.0249441
imperial gallons0.00623602
Show the working
  1. 1 oz = 28.349523125 g
  2. ÷ 1 g/mL (USDA FDC 174158, 1 ml = 1 g) = 28.349523125 mL
  3. = 0.00748915170731 gal

How to convert ounces to us gallons

1 oz = 0.00748915 gal, so multiply by 0.00748915 to go from ounces (avoirdupois) to US gallons. Going the other way, 1 gal = 133.526 oz.

gal = oz × 0.00748915
oz = gal × 133.526

Worked example:

5 oz = 141.747615625 g
÷ 1 g/mL (USDA FDC 174158, 1 ml = 1 g) = 141.747615625 mL
= 0.0374457585365 gal

Ounces to us gallons table

OuncesUS Gallons
1 oz0.00748915 gal
2 oz0.0149783 gal
3 oz0.0224675 gal
4 oz0.0299566 gal
5 oz0.0374458 gal
6 oz0.0449349 gal
7 oz0.0524241 gal
8 oz0.0599132 gal
9 oz0.0674024 gal
10 oz0.0748915 gal
15 oz0.112337 gal
20 oz0.149783 gal
25 oz0.187229 gal
30 oz0.224675 gal
40 oz0.299566 gal
50 oz0.374458 gal
75 oz0.561686 gal
100 oz0.748915 gal
250 oz1.87229 gal
500 oz3.74458 gal
1000 oz7.48915 gal

About the units

Ounces (oz)
Ounces (avoirdupois), a US customary unit. Definition: NIST Handbook 44 Appendix C (US customary units; US gallon = 231 in³).
US Gallons (gal)
US gallons, a US customary unit. Definition: NIST Handbook 44 Appendix C (US customary units; US gallon = 231 in³).

Formula version 0.1.0Reviewed