Custom Unit Converter Widget

Simple measurement converter widget. There is a possibility to add custom units in admin area and disable or delete units.

Here are the Measurements and units included as presets: * Angle — units Degree, Gradian, Radian * Area — units Acres, Hectares, Square centimeter, Square feet, square inch, square kilometer, square meters, square mile, square millimeter, square yard * Length — meter, centimeter, millimeter, foot, inch, rod, yard, mile, nautical mile * Temperature — Celsius, Fahrenheit, Kelvin * Volume Fluid — fluid ounce UK, fluid ounce US, Gallon UK and US, Pint UK and US, liter, quart UK and US, milliliter * Volume Solid — cubic centimeter, cubic meter, cubic feet, cubic inch, cubic yard * Weight — gram, kilogram, ounce, pound, stone