Investing calculators for long-game math.
Model what contributions, time, and compounding actually do — then size the position so one bad trade never decides your year.
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Investing calculators
Compound Growth Calculator
See what regular contributions plus time can actually do.
Stock Position Sizer
Turn a risk % rule into an exact share count.
Stock Return (CAGR) Calculator
Total return, CAGR, and price-vs-total-return with dividends.
Dollar-Cost Averaging Calculator
Model monthly investing vs a lump sum — and see what compounding really does.
Dividend Yield & YOC Calculator
Current yield, yield-on-cost, and what dividend growth does over 20 years.
Net Worth Calculator
Itemize every asset and liability — with an asset/liability breakdown bar.
How to use the investing calculators
These tools cover the two halves of investing math: growth and risk. The compound growth, dollar-cost averaging, and CAGR calculators answer what a stream of contributions is worth after decades of returns, and how a real-world result compares to the benchmark you would have earned by doing nothing clever at all.
The position sizer flips the question. Instead of asking how much you could make, it starts from the loss you are willing to take and works backward to an exact share count. Pair it with the net worth calculator to keep any single holding honest against the size of the whole balance sheet.
Every calculator on this page keeps your inputs in the URL, so you can bookmark a scenario or send it to someone else and they will see the exact same result.