About Us

portfolios.tools is a free, open-access platform providing financial calculators and simulators for DIY investors. We believe that powerful financial tools should be accessible to everyone — not just those who can afford expensive software or advisory fees.

Our calculators run entirely in your browser. No data is sent to any server. No accounts required. No hidden costs. We built this platform to democratize access to financial math, helping you make informed decisions about your money.

Whether you are rebalancing a portfolio, comparing compound interest scenarios, computing bond yields, or tracking dividend calendars — our tools give you instant, accurate results without ever leaving your browser.