Financial Data & Scenario Tools

Convert currencies using real ECB rates. The mini charts show 30-day trends. Click any card to quick-convert.

Live cryptocurrency prices from CoinGecko. Prices update every time you open the page. Shows the top coins by market cap plus 24-hour change.

Look up any US stock price by ticker symbol (like AAPL, TSLA, MSFT). Uses Alpha Vantage free API. The free tier allows 25 lookups per day — plenty for checking prices. Data is delayed ~15 min.

Optional: paste your own Alpha Vantage key for more reliable stock lookups. It is stored only in this browser.

Real annual inflation rates (CPI) for major economies, from the World Bank. This is the official data governments report. Updated yearly — the most recent data is typically 1-2 years behind. Useful for comparing inflation across countries over time.

DCF estimates a company's worth by adding up all future cash flows, discounted to today's value. $100 next year is worth less than $100 today — the discount rate captures that.

See how money snowballs. Start with something, add monthly, and let time work. Stock market averages ~7-10%/yr historically.

Calculate monthly payments for any loan. See total interest cost and how extra payments save money.

Enter buy/sell price and holding period to get your total and annualized return. Annualized lets you fairly compare investments held for different durations.

See how inflation erodes purchasing power. Check what today's money will buy in the future, or what old money would be worth now.