Markets & Economy · Calculators & Links

Calculators & Links

Finance calculators (options, bonds, loans, compounding, position sizing) and a directory of the best free finance and economics tools on the web.

📈 Compound growth & savings

Starting amount ($) Added each month ($) Annual return (%) Years Contributions grow each year (%) Inflation (%)

🏠 Loan & mortgage

Loan amount ($) Interest rate (%) Term (years) Extra payment per month ($)

🎯 Option pricer (Black–Scholes) & Greeks

Stock price Strike Days to expiration Implied volatility (%) Risk-free rate (%) Dividend yield (%)

🏛️ Bond price, yield & duration

Face value ($) Coupon rate (%) Years to maturity Yield to maturity (%) Payments per year Or find the yield from a price (per 100)

⚖️ Position size & risk/reward

Account size ($) Risk per trade (%) Entry price Stop-loss price Target price (optional)

🛒 Inflation: what’s it worth today?

Amount ($) In year Worth in year

📊 Annualized return (CAGR)

Starting value Ending value Years

💵 T-bill price & yield

Discount rate (%) Days to maturity

Bills are quoted at a discount rate on a 360-day year; the investment rate is the comparable bond yield, which Treasury reports with each auction.

🔁 Real (after-inflation) return

Nominal return (%) Inflation (%)

🌡️ More calculators

The VIX page has an expected-move calculator, and Economic data lets you chart any series as year-over-year, month-over-month or 3-month annualized changes and download the numbers.

The best free finance & economics tools on the web

Economic data

FRED: 800,000+ U.S. and international series from the St. Louis Fed, with charting and downloads.
ALFRED: the numbers as first published, before revisions.
BLS (jobs, CPI, PPI), BEA (GDP, PCE) and Census (retail sales, housing): the original sources.
Atlanta Fed GDPNow and NY Fed Staff Nowcast: real-time GDP estimates.
Cleveland Fed Inflation Nowcasting: daily estimates of this month’s CPI and PCE.
DBnomics, World Bank, IMF, OECD and Our World in Data: international statistics.

The Fed & interest rates

CME FedWatch: market-implied odds of each Fed rate decision.
FOMC calendar: meeting dates, statements, minutes and the “dot plot”.
TreasuryDirect auctions: announcements and full results; you can also buy Treasuries directly.
NY Fed reference rates: SOFR and the fed funds rate each morning.

Charts, screeners & market maps

TradingView: the charts on these pages, with alerts and saved layouts on a free account.
Finviz: fast screener, market heat maps and insider trades.
StockCharts: classic technical charts and market breadth.
Koyfin: Bloomberg-style dashboards; the free tier is generous.
Yahoo Finance and Google Finance: quotes, news and historical prices.

Company research

SEC EDGAR full-text search: every 10-K, 10-Q, 8-K and proxy, searchable.
Stock Analysis and Macrotrends: long financial histories and ratios.
OpenInsider: insider buying and selling from SEC Form 4.
WhaleWisdom: what big funds own (13F filings).
Nasdaq earnings calendar: who reports this week.

Valuation & long-run data

Multpl: Shiller CAPE, dividend yield and other S&P 500 ratios back to 1871.
Aswath Damodaran’s data: equity risk premiums, industry margins and valuation spreadsheets.
Kenneth French Data Library: factor returns (value, size, momentum) back to 1926.

Options & volatility

Cboe VIX and VIX Central: the index and the full futures curve.
OptionStrat and Options Profit Calculator: visualize payoffs for any strategy.

Portfolios & backtesting

Portfolio Visualizer: backtest asset allocations, Monte Carlo simulations, factor analysis.
Bogleheads wiki: plain-spoken guides to investing and retirement accounts.

Bitcoin

mempool.space: live Bitcoin blocks, fees and transactions.
The Bitcoin white paper (Satoshi Nakamoto, 2008): nine pages.

Learning

Investopedia: definitions of almost every finance term.
FRED Blog: short, chart-driven explanations of economic data.
Khan Academy: free courses in economics and finance.