How many fluid ounces are there in one cup?

One cup is universally defined as having 8 fluid ounces. This measurement is standard in both cooking and liquid volume conversions, making it a reliable reference for various recipes and fluid measurements. Understanding this standard allows for consistent measurements across different contexts, whether in culinary practices or when working with liquid measurements in general. Therefore, recognizing that one cup equals 8 fluid ounces can help in accurately converting and comparing measurements in everyday situations.