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Free Investing Calculators
Plan, project and value your investments with free, instant calculators. No sign-up required.
Position Size Calculator
Calculate trade size based on your account and risk.
StrategyCost Average Calculator
Plan and model a dollar-cost averaging (DCA) investment strategy.
GrowthCompound Interest Calculator
Project how a lump sum and monthly contributions grow over time.
IncomeDividend Calculator (DRIP)
Estimate future dividend income with reinvestment and dividend growth.
TradingStock Profit Calculator
Work out profit, ROI, taxes and break-even price on a trade.
ReturnsCAGR Calculator
Find the compound annual growth rate of any investment.
ValuationDCF Calculator
Estimate a stock's intrinsic value with a discounted cash flow model.
PlanningRetirement Calculator
See whether your savings are on track for the income you want.
TrackingPortfolio Tracker
Track holdings, gains and allocation with live prices.
ResearchStock Screener
Filter the market by fundamentals and performance.
CompareStock Comparison
Compare up to 4 stocks side by side on every key metric.
AIAI Stock Insights
Get a 0–100 score with plain-English strengths and risks.
Which investing calculator should I use?
Planning long-term growth? Start with the compound interest calculator to project how regular saving grows, then the retirement calculator to see whether you're on track and what income your savings could support using the 4% rule.
Building income? The dividend calculator projects future dividend income with reinvestment and dividend growth. Pair it with our guide to dividend investing for beginners.
Investing a set amount each month? The dollar-cost averaging calculator shows your average cost per share and compares regular investing with putting in a lump sum.
Valuing a stock? The DCF calculator estimates intrinsic value from a company's free cash flow; read intrinsic value and DCF to choose sensible assumptions.
Reviewing a trade? The stock profit calculator works out profit, return, estimated tax and break-even price; the CAGR calculator turns any start and end value into an annual growth rate; and the position size calculator tells you how many shares to buy for the risk you're willing to take.
Free, private and no sign-up
Every StockEngine calculator is free, runs instantly in your browser and doesn't ask for an account or personal details. Results are estimates based on the assumptions you enter, not predictions or investment advice. For research on individual companies, use the stock screener, AI Insights and the compare tool, and browse our investing guides.