Area of a Circle
Calculate area of a circle given any of the following, radius, diameter or circumference and vice versa
Link To Hyperlink
Convert links / URLs to Hyperlinks so that those are clickable as well as you can use Right Click and Save As...
Visually appealing simple calculator! can be used with mouse or keyboard
Sales Tax Calculator
Simple Calculator to compute the Sales Tax given the Cost / Prices of goods or services and the applicable tax amount