Smarter investing math, in seconds.
Free calculators and AI research tools for everyday investors. No signup, no paywall. Everything runs in your browser.
CalculatorCompound InterestWatch a starting balance and monthly contributions grow.CalculatorDividend IncomeProject passive income with DRIP and dividend growth.CalculatorFIRE / Early RetirementFind your FIRE number and when you get there.AI toolAI Stock Research PromptsAnalyst-grade prompts for ChatGPT, Claude & Perplexity.CalculatorCAGR / Stock ReturnThe true annualized return of any investment.CalculatorPosition SizeHow many shares to buy for a fixed risk per trade.CalculatorInflation-Adjusted ReturnWhat your future money is worth in today’s dollars.GuideUsing AI for Stock ResearchA workflow that avoids AI hallucinations.GuideBest AI Investing ToolsWhat each AI investing tool is actually good for.
Popular questions, answered with numbers
How much do I need for dividend income?
- $100/mo in dividends
- $500/mo in dividends
- $1,000/mo in dividends
- $2,000/mo in dividends
- $3,000/mo in dividends
- $5,000/mo in dividends
- $10,000/mo in dividends
What if I invest every month?
Built for people who'd rather do the math
Every tool shows its formula and assumptions, so you can see how each number is calculated. Change any input and the results update instantly. You can also share or bookmark any result, because the URL keeps your inputs.