Calculator Guide
The ETF comparison calculator helps compare two assets using the same monthly investment amount and the same time period. It is built for educational DCA backtesting, not recommendations.
The tool compares Asset A and Asset B using matching assumptions: monthly investment amount, start year, end year, and display currency. It reports final value, total profit, total return, annualized return estimate, max drawdown, and the difference in final value. Using identical assumptions matters because it keeps the comparison focused on the assets and historical price paths rather than different contribution schedules.
The comparison page is useful for users studying ETF DCA scenarios such as VOO vs CSPX, VOO vs QQQ, CSPX vs VWRA, IWDA vs VWRA, or other supported assets. It can also help users compare a broad index ETF with a more concentrated ETF, a U.S.-listed ETF with a UCITS ETF, or two regional market instruments. The goal is to understand historical behavior, risk, and assumptions, not to identify a guaranteed winner.
A user might choose VOO as Asset A and QQQ as Asset B, set $500 per month, and compare 2018 through 2025. Another user might compare VOO with CSPX to study U.S.-listed versus UCITS S&P 500 exposure. The output shows both portfolios on one chart, making it easier to see how final value and drawdowns changed over time. Share and caption tools can help preserve the settings, while the disclaimer reminds users that the result is educational.
When historical data is available, the calculator uses monthly prices generated from historical daily adjusted close data. Each monthly contribution buys estimated shares for each asset. The two portfolios are then valued through the same selected time period. If one asset lacks imported historical data, the tool displays a sample-data warning and keeps the comparison transparent. The result should not be treated as real historical performance when sample data is involved.
Historical data may come from Yahoo Finance historical prices and may be delayed, adjusted, incomplete, or different from official fund NAV, exchange, or broker data. Display currency conversion is for presentation. Real returns can differ because of broker fees, spreads, taxes, dividend treatment, withholding tax, exchange rates, execution prices, tracking error, and fund expense ratios. These differences can be especially important when comparing assets listed in different countries or currencies.
Use the ETF comparison calculator to ask better questions: Did one asset have deeper drawdowns? Did a concentrated index create larger swings? Did a UCITS listing behave differently from a U.S.-listed ETF in the available data? The result is a historical scenario, not a forecast. Past performance does not guarantee future results, and this page is not financial advice or an investment recommendation.
Use the interactive DCA Backtest and Compound Interest Calculator to model your own monthly investment scenario.
Open the main calculatorYes. The comparison section uses the same monthly amount and time period for both selected assets.
It can show final value, total profit, total return, annualized return estimate, max drawdown, final-value difference, and data-source labels.
The calculator falls back to sample data and displays a sample data warning so the result is not presented as real historical performance.
Yes, if the assets exist in the supported instrument list. However, cross-market comparisons can be affected by currency, tax, dividend, exchange, and data-source differences.
No. Real brokerage results can differ because of fees, taxes, spreads, dividends, exchange rates, execution prices, and data differences.
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Use this DCA calculator and DCA backtest calculator to study monthly investing, ETF DCA scenarios, fees, data limits, and long-term outcomes.
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This page is for educational purposes only and is not financial advice. Past performance does not guarantee future results.