1 Oz to Cups
1 US fluid ounces equals 0.125 US cups (1/8 cup). Change the amount, swap units, or copy the result. Fluid volume only, not weight ounces.
Best solution
Default conversion: 1 US fl oz is 1/8 cup (0.125 cups); 2 US tbsp / approximately 29.57 mL.
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Calculation for 1 US fl oz
1 US fl oz ÷ 8 = 0.125 US cups = 1/8 cup. 1 US fl oz × 2 = 2 US tablespoons.
The cup fraction is exact for this whole-number fluid-ounce input. The milliliter equivalent is 1 × 29.5735295625, rounded to 29.57 mL. Weight ounces require ingredient-specific data and are not converted here.
All volume units in this converter are US customary units. The primary decimal is rounded to four places and milliliters to two. For arbitrary inputs, the displayed cup fraction is a nearby fraction with a denominator up to 16, not necessarily an exact equivalent. This does not convert weight ounces or Imperial fluid ounces. NIST unit conversion reference.
Real-World Context & Technical Standards
Two Standard Tablespoons
In US customary cooking, 1 fluid ounce equals exactly 2 level tablespoons or 6 teaspoons (approx. 29.57 mL).
Single Cocktail Jigger Measure
Professional cocktail jiggers commonly feature a 1 fl oz smaller cup, standard for balancing citrus juice and liqueurs in craft drinks.
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Frequently Asked Questions
How many cups is 1 oz of liquid?
There are 8 fluid ounces in 1 US cup. Dividing 1 by 8 gives 0.125 cups (or 1/8 cup).
How many tablespoons is 1 fl oz?
Each US fluid ounce equals 2 US tablespoons. Therefore, 1 US fl oz = 2 US tablespoons.
Can I convert 1 ounces by weight to cups here?
No. This tool converts volume, not mass. If 1 oz is a scale reading or a package's net weight, cups depend on the ingredient's density. A volume measured in US fluid ounces still follows the same volume ratio, regardless of the ingredient.
Does this use a metric cup or Imperial fluid ounce?
Neither. This tool uses US customary cups and US fluid ounces. Check the unit system in your recipe before using the result; different cup or fluid-ounce definitions are not interchangeable.