Free Tools
Investing calculators built for real decisions.
Every tool here is free, browser-based, and designed to answer a real question you'd otherwise need a spreadsheet to figure out. No signup, no email, no upsell.
Dividend Yield Calculator
Calculate annual dividend income from any stock or ETF given price, quantity, and yield. Instant results.
DRIP Calculator
Simulate dividend reinvestment over time. See year-by-year how shares, income, and portfolio value compound.
FIRE Calculator
Find your FIRE number, years to retirement, and projected monthly income using the 4% rule. Model your timeline.
Dividend Growth Calculator
Project how your dividend income grows when a company raises payouts year after year. Compounding dividend model.
Yield on Cost Calculator
See your yield on cost grow year by year as a dividend compounds. Pure growth effect — no reinvestment assumed.
Monthly Income Planner
Visualize your dividend income calendar month by month. Spot gaps, smooth your payouts, plan across quarterly cycles.
Concentration Checker
HHI-based portfolio concentration score plus effective-holdings metric. Diagnose single-stock risk instantly.
Investor Archetype Quiz
Free 60-second quiz. Discover which of 13 investor archetypes matches your style — Steady Earner, Bold Investor, Income Chaser, and more.
Why build our own calculators?
Most online dividend calculators assume a single share price, ignore dividend growth, or don't let you model reinvestment. Ours start with real inputs most investors track — yield, growth rate, horizon, reinvestment mode — and compound them honestly. When the Infnits app launched, we needed these under the hood anyway. Putting them on the web is table stakes.
Want it automated across your real portfolio?
Infnits is the free iOS and Android app that runs all of these projections against your actual brokerage holdings. Connect once — track dividends, run Monte Carlo simulations, check concentration risk, and see your FIRE timeline using real data instead of manual inputs.