15 US cups to US fluid ounces
120.00 fl oz
15 cup = 120.00 fl oz.
US fluid ounces
120.00fl oz
15 cup = 120.00 fl oz
In short
How many US fluid ounces is 15 US cups?
15 cup = 120.00 fl oz. 1 US cup = 8.000000 US fluid ounces, so the working is 15 × 8.000000 = 120.00.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 US cup = 8.000000 US fluid ounces 15 × 8.000000 = 120.00
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (fl oz) | Off by |
|---|---|---|
| Whole number | 120 | exact |
| 1 decimal | 120.0 | exact |
| 2 decimals | 120.00 | exact |
Round trip: take 120.00 fl oz back the other way and you land on 15.0000 cup — a drift of 0.0000 cup. That gap is the rounding, not the conversion.
Frequently asked questions
What is 15 US cups in US fluid ounces?
15 US cups is 120.00 US fluid ounces. 1 US cup = 8.000000 US fluid ounces, so the working is 15 × 8.000000 = 120.00.
How accurate is 120.00 fl oz?
Rounding to 120.00 fl oz and converting straight back gives 15.0000 cup, a drift of 0.0000 cup from the 15 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
Cups to Ounces Converter
Convert US cups to fluid ounces — the eight-ounce cup, and where the metric cup differs.
Open the cups to ounces converter →