30 Oz to Cups
30 US fluid ounces equals 3.75 US cups (3 3/4 cup). Change the amount, swap units, or copy the result. Fluid volume only, not weight ounces.
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Default conversion: 30 US fl oz is 3 3/4 cup (3.75 cups); 60 US tbsp / approximately 887.21 mL.
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Calculation for 30 US fl oz
30 US fl oz ÷ 8 = 3.75 US cups = 3 3/4 cup. 30 US fl oz × 2 = 60 US tablespoons.
The cup fraction is exact for this whole-number fluid-ounce input. The milliliter equivalent is 30 × 29.5735295625, rounded to 887.21 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
Standard Large Mayonnaise Jar
Standard grocery store family jars of Hellmann's or Best Foods mayonnaise are famously packaged in 30 fluid ounce plastic jars.
Three and Three-Quarter Cups
30 fluid ounces equals exactly 3 3/4 cups (60 tablespoons), a frequent volume when making large batches of coleslaw.
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Frequently Asked Questions
How many cups is 30 oz of liquid?
There are 8 fluid ounces in 1 US cup. Dividing 30 by 8 gives 3.75 cups (or 3 3/4 cup).
How many tablespoons is 30 fl oz?
Each US fluid ounce equals 2 US tablespoons. Therefore, 30 US fl oz = 60 US tablespoons.
Can I convert 30 ounces by weight to cups here?
No. This tool converts volume, not mass. If 30 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.