InvestCalculator is a set of free, fast investment calculators for US investors: an investment growth calculator, compound interest, dollar cost averaging, dividend and dividend reinvestment (DRIP) calculators. Every calculator runs entirely in your browser, shows the formula it uses, and lets you share a link to your exact scenario.
Who is behind the site
The calculators and explanations are built and maintained by the InvestCalculator Team. We write the calculation engine ourselves, publish the formulas and assumptions behind every result, and review each page regularly. The site is independent: we are not owned by a broker, fund company or adviser.
Our principles
- Transparent math. Each calculator page explains its formula and assumptions, and our methodology page documents the engine in detail.
- Tested. The calculation engine is covered by automated tests that check results against closed-form financial formulas.
- Private. We do not store anything you enter.
- Education, not advice. We explain how the numbers work. We do not recommend specific investments. See our disclaimer.
Corrections and contact
Found an error or have a suggestion? Email yhhhhs233@gmail.com. We review every report and note material corrections on the affected page.