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120 Fluid Ounces to Cups

120 fluid ounces equals 15 cups. Use the formula, worked example, and conversion table below to check the math.

120 fl oz = 15 cup
fl oz ÷ 8 = cup
Try: 115 fl oz to cup 119 fl oz to cup 121 fl oz to cup 125 fl oz to cup
120 fl oz is also
120 fl oz = 3.55 L 120 fl oz = 0.9375 gal 120 fl oz = 3,548.82 mL 120 fl oz = 7.5 pt 120 fl oz = 3.75 qt 120 fl oz = 240 tbsp 120 fl oz = 720 tsp
fl oz
15 cup

How to Convert Fluid Ounces to Cups

fl oz ÷ 8 = cup
  1. Start with 120 fl oz
  2. Divide by 8: 120 ÷ 8 = 15
  3. Result: 120 fl oz = 15 cup

The same formula works for any value. Multiply by 0.125 to go from fluid ounces to cups.

Common Fluid Ounce to Cup Conversions

Fluid Ounces (fl oz) Cups (cup)
1 fl oz 0.125 cup
2 fl oz 0.25 cup
5 fl oz 0.625 cup
10 fl oz 1.25 cup
15 fl oz 1.88 cup
20 fl oz 2.5 cup
25 fl oz 3.13 cup
50 fl oz 6.25 cup
75 fl oz 9.38 cup
100 fl oz 12.5 cup
120 fl oz 15 cup
250 fl oz 31.25 cup
500 fl oz 62.5 cup
1,000 fl oz 125 cup
calculate Fluid Ounce to Cup Converter swap_horiz Cup to Fluid Ounce Converter functions Fluid Ounce to Cup Formula water_drop All Volume / Capacity Conversions

Frequently Asked Questions

120 fluid ounces equals 15 cups.
The formula is: fl oz ÷ 8 = cup. See the fl oz to cup formula page for worked examples.
Use the cups to fluid ounces converter. The reverse formula is: cup × 8 = fl oz.
The calculator uses the full-precision conversion factor for accuracy. Table values and displayed results are rounded for readability.
The conversion formula (fl oz ÷ 8 = cup) is based on internationally defined standards. Displayed results are rounded for readability, while the calculator uses the full-precision factor.
person Written by Sean Day verified Reviewed by UnitCompare update Last updated Mar 28, 2026