Sample Lesson Converting Units How do I convert metric to U.S units and vise versa (kilograms to pounds, meters to feet, centimeters to inches, liters to gallons, etc.)? How do I convert Celsius temperatures to Fahrenheit? How many pints are in a gallon? How do I convert square feet to square inches? You will find lots of useful information in the Conversions and Equivalents pages of the almanac, including Fahrenheit and Celsius (Centigrade) Scales , Metric to U.S. equivalents and Conversion Factors for many U.S. and metric measurements. A "conversion factor" is a number you multiply by to switch from one unit to the other. Try our on-line conversion calculator where you can calculate: Length/Distance Area Length/Distance Volume Temperature Cooking Time