Conversion Calculators
Convert between US customary and metric units and calculate the area and volume of common shapes.
Conversion Calculators list
Length Converter
Inches, feet, yards, miles, millimeters, meters and kilometers.
Weight Converter
Pounds, ounces, stones, grams, kilograms and tons.
Temperature Converter
Fahrenheit, Celsius, Kelvin and Rankine.
Area Calculator
Area of rectangles, circles, triangles and more.
Volume Calculator
Volume of boxes, cylinders, spheres, cones and more.
US customary and metric conversions
The length and weight converters use the exact international definitions — one inch is exactly 2.54 centimeters and one pound is exactly 0.45359237 kilograms — so conversions are precise in both directions. The Temperature Converter handles Fahrenheit, Celsius, Kelvin and Rankine.
The Area and Volume calculators compute the size of common shapes from your measurements and show the result in several units at once, such as square feet and acres or cubic feet, liters and US gallons.