Numerical examples dealing with financial matters.
I have tried to make calculators that are useful for real life situations. In the loan calculator you can do 15 calculations on a single page, and three calculations simultaneously. This makes comparisons for real life decisions easier. Whenever possible I use a begin date and an end date rather than a period in a form. For example, in the savings calculator you can compute what you save from begin date to the end date. Whereever it makes sense I am computing the effective interest, even if it involves solving an equation numerically. Though often difficult to compute, the effective interest is very convenient way to compare financial products.