Free trading tools & stock calculators
Everything you need to plan a trade, project long-term growth, research a ticker, and practice without risking real money — free and without an account. These are the calculations and workflows premium platforms often bury behind paywalls.
Start with the stock market simulator to paper trade, use the position size calculator before every idea, and research names with live stock lookup. Pair tools with our investing guides when you want the “why,” not just the math.
All free tools
Stock Market Simulator
Practice trading with fake money.
Paper trade stocks and ETFs with live market prices, a watchlist, charts, and portfolio stats. Start with virtual cash, practice buy/sell discipline, and export your trade history — no brokerage account required.
Open toolPosition Size Calculator
Risk the right amount on every trade.
Turn account size, risk %, entry, and stop-loss into an exact share count. Built around the 1% rule so one bad trade can’t wipe out months of progress. Essential risk math before you click buy.
Open toolCompound Growth Projector
See how your portfolio grows over time.
Project future portfolio value with starting capital, regular contributions, expected returns, and compounding frequency. Compare “save more” vs “earn more” scenarios and see how time does most of the work.
Open toolDividend & DRIP Calculator
Forecast your dividend income.
Estimate annual dividend income, model dividend growth, and project DRIP reinvestment over time. See how cash payouts vs automatic share buys change long-term income and share count.
Open toolLive Stock Lookup
Real-time quotes, news & earnings.
Look up any ticker for live quotes, charts, and fundamentals like P/E, ROE, margins, debt, beta, and 52-week range — with plain-English explanations so the numbers actually mean something.
Open toolOptions Profit Calculator
Calculate option P&L scenarios.
Map call and put payoffs at different stock prices. Instantly see breakeven, max profit, and max loss so you understand risk before you pay premium on a contract.
Open toolPortfolio Tracker
Track your holdings and performance.
Add holdings with cost basis, update prices, and monitor total value and P&L. Privacy-first: everything stays in your browser, with CSV export when you want a snapshot.
Open toolDollar Cost Averaging Calculator
See the power of regular investing.
Compare dollar cost averaging vs lump sum investing under your contribution schedule and return assumptions. Useful for paycheck investing, 401(k) habits, and reducing timing regret.
Open toolStock Profit Calculator
Figure out trade P&L in seconds.
Enter buy price, sell price, shares, and fees to see net profit or loss, percent return, and break-even sell price. The quick answer to “how much did I make on this trade?”
Open toolInvestment Return Calculator
Calculate your actual returns.
Convert starting value, ending value, and time into total return, ROI, and CAGR. Measure real performance so you can compare strategies fairly across different holding periods.
Open toolWhy use free stock trading tools?
Good investing is mostly process: size risk correctly, stay invested long enough for compounding to matter, understand what you own, and practice before you scale up. Swift Penguin’s tools are built for those jobs — calculators and simulators you can open in a browser with no signup, no trial, and no upsell.
How to combine these tools
- Research → practice → size: look up a ticker, paper trade the idea in the simulator, then size the real trade with the position size calculator.
- Income & growth: model dividends and DRIP, then project multi-decade growth with the compound calculator.
- Habits & results: compare DCA vs lump sum, track holdings privately, and measure CAGR so you’re not guessing performance.
- Options: sketch call/put payoffs before you risk premium — then keep position risk tiny until you understand theta and IV.
Free forever, no account required
We don’t ask for an email to “unlock” basic math. Portfolio and simulator data that needs persistence stays in your browser. Use the tools as often as you want, bookmark the ones you reopen weekly, and read the matching guides when a concept still feels fuzzy.
Ready to put this into practice?
Trading 212 — Commission-free stocks & ETFs with fractional shares. Open an account in minutes and start applying what you learned here.
- Zero-commission stock & ETF investing
- Fractional shares from $1
- Built-in Pies for automated portfolio rebalancing
Referral link · capital at risk