Tools

Calculators

Simple tools that show the math, with no sign-up. Each one comes with real examples and a plain explanation.

Compound Interest Calculator

See how a starting amount and monthly savings grow, year by year.

Income from a dividend stock or fund, with or without reinvesting.

The real yearly growth rate between two values, and why averages mislead.

How many shares to buy so one mistake costs only what you planned.

What a fund's yearly fee costs you in dollars over the years.