You may measure length, surface area, volume or capacity, weight, temperature, and time. Measurement may be done using the metric system or the U.S. measurement system. In the U.S. standard, length is expressed in inches, feet, yard, and miles. Liquid is measured in fluid ounces, cups, pints, quarts, and gallons; mass or weight is measured using ounces, pounds, and tons. Surface area is expressed in square inch, square foot, square yard, and acre. The units for time are seconds, minutes, hours, days, weeks, months, and year, while the unit for measuring temperature is degrees Fahrenheit.