For finance and economics students

Finance formulas, minus the mystery.

Type in your numbers and watch the answer move. Underneath, the plain-English explanation a textbook skips, for students who'd rather understand a formula than memorise it.

Live · Compounding a single sum

Future Value

What a sum today grows into, once interest earns interest.

$
%
Value after the term

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Everything, in order

Start at the top and work down

Topics are laid out the way they are taught — each one leans on the ones above it. Jump in anywhere, or follow it straight through.