Every "free" dividend calculator I tried wanted an email, a signup, or a trial. The math behind all of them is public — yield, payout ratio, reinvestment compounding — so I built a dividend payout calculator that's actually free, runs entirely in the browser, and open-sources the engine.

What's in it

A suite of focused calculators rather than one mega-tool:

Dividend yield + payout ratio — the two-number sustainability check.

DRIP calculator — year-by-year reinvestment with a results table and chart.