1. Home
  2. Volume

Fluid Ounce

VolumeUS Customaryfl-oz

Definition and History

The fluid ounce is a unit of volume in the imperial and US customary systems, equal to approximately 29.57 milliliters. It is commonly used for measuring small quantities of liquids, particularly in cooking and beverage serving.

The fluid ounce was originally based on the volume of a standard ounce of water. It has become a standardized unit for measuring small quantities of liquids in various applications, providing a practical measurement for everyday use.

The fluid ounce is approximately equal to 2 tablespoons in the US customary system, making it a convenient unit for measuring small quantities of liquids in both culinary and medical applications.

Usage and Applications

Fluid ounces are commonly used for measuring small quantities of liquids in cooking and beverage preparation, particularly for recipes and serving sizes. They are essential for precise measurements in both home cooking and commercial food service.

In medicine and pharmacy, fluid ounces are used for measuring liquid medication doses and preparing prescriptions in compounding pharmacies. They provide a standardized way to measure liquid medications for both children and adults.

Scientific and Engineering Applications

In laboratory settings, fluid ounces are sometimes used for measuring small quantities of liquids in chemistry and biology experiments, particularly in American research institutions where imperial units are preferred.

In food science and nutrition, fluid ounces are used for measuring serving sizes and nutritional content calculations in dietary analysis and food labeling, ensuring accurate nutritional information for consumers.

International Standards

The fluid ounce is officially defined as exactly 29.5735 milliliters in the US customary system. It provides consistency in cooking, medical, and beverage measurements across different applications and industries.

The fluid ounce is widely recognized and used in many countries for cooking, medical, and beverage applications, ensuring consistency in recipe measurements and serving sizes while maintaining compatibility with the imperial measurement system.

Did You Know?

The fluid ounce is a unit of volume, not weight. The US fluid ounce equals about 29.57 milliliters, while the Imperial fluid ounce equals about 28.41 milliliters. It's commonly used for beverage measurements and cooking in English-speaking countries.

All conversions from Fluid Ounces (fl-oz)