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Ounces to US Fluid Ounces Converter

Convert ounces (avoirdupois) (oz) to US fluid ounces (fl oz), 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
0.958611 fl oz
Density used
1 g/mL (USDA FDC 174158, 1 ml = 1 g)

1 ounces (avoirdupois) of water = 0.958611 US fluid ounces. 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 cups0.119826
US liquid pints0.0599132
US liquid quarts0.0299566
US gallons0.00748915
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. = 0.958611418535 fl oz

How to convert ounces to us fluid ounces

1 oz = 0.958611 fl oz, so multiply by 0.958611 to go from ounces (avoirdupois) to US fluid ounces. Going the other way, 1 fl oz = 1.04318 oz.

fl oz = oz × 0.958611
oz = fl oz × 1.04318

Worked example:

5 oz = 141.747615625 g
÷ 1 g/mL (USDA FDC 174158, 1 ml = 1 g) = 141.747615625 mL
= 4.79305709268 fl oz

Ounces to us fluid ounces table

OuncesUS Fluid Ounces
1 oz0.958611 fl oz
2 oz1.91722 fl oz
3 oz2.87583 fl oz
4 oz3.83445 fl oz
5 oz4.79306 fl oz
6 oz5.75167 fl oz
7 oz6.71028 fl oz
8 oz7.66889 fl oz
9 oz8.6275 fl oz
10 oz9.58611 fl oz
15 oz14.3792 fl oz
20 oz19.1722 fl oz
25 oz23.9653 fl oz
30 oz28.7583 fl oz
40 oz38.3445 fl oz
50 oz47.9306 fl oz
75 oz71.8959 fl oz
100 oz95.8611 fl oz
250 oz239.653 fl oz
500 oz479.306 fl oz
1000 oz958.611 fl oz

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 Fluid Ounces (fl oz)
US fluid ounces, a US customary unit. Definition: NIST Handbook 44 Appendix C (US customary units; US gallon = 231 in³).

Formula version 0.1.0Reviewed