Unit Converters

Length converter: convert inches, feet, yards and miles to and from millimeters, meters and kilometers.

Weight converter: convert pounds, ounces and US tons to and from grams, kilograms and metric tons.

Temperature converter: convert Fahrenheit to Celsius, Celsius to Fahrenheit, and either to Kelvin.

Square footage calculator: find the area in square feet of a room from its length and width in feet or inches, for flooring, paint or rent.

F to C calculator: convert Fahrenheit to Celsius (and Kelvin) instantly, with the formula and a worked example.

mg to mL calculator: convert milligrams to milliliters using the density or concentration of the substance.

mL to mg calculator: convert milliliters to milligrams using the density or concentration of the substance.

Grams to cups converter: convert grams of flour, sugar, butter and other ingredients to US cups, tablespoons and ounces.

Military time converter: change 24-hour time to 12-hour AM/PM and back, with the minutes since midnight and the spoken form.