Calculadora de Carteira de Investimentos
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
retorno = Σ(peso_i × retorno_i) / 100
About this calculator
The Investment Portfolio Calculator allows you to calculate the weighted return of a portfolio with up to 4 assets. Simply enter the weight of each asset (as a percentage) and its respective return (also as a percentage). The result is the weighted average return, reflecting the portfolio's expected overall performance. This tool is useful for investors who want to quickly assess the impact of different asset allocations on total return.
The calculation uses the formula: portfolio return = (weight1 × return1 + weight2 × return2 + ... ) / 100. The weights must sum to 100% for accuracy. If the sum differs from 100%, the tool will display a warning but still calculate the return based on the entered values. Keep in mind that past performance does not guarantee future results, and the calculator does not consider costs such as management fees or taxes.
Use this calculator when comparing different portfolio compositions, such as deciding between allocating more to fixed income or equities. For example, if you have 60% in an asset with an 8% return and 40% in another with 12%, the weighted return is 9.6%. This helps visualize the effect of diversification on expected return. The tool is ideal for both beginner and experienced investors needing quick simulations.
Cautions: ensure weights sum to 100% to avoid distortions. Remember that the expected return is only an estimate; risks like volatility and inflation are not captured. Also, the calculator does not replace a full risk-return analysis. Use it as a starting point for allocation decisions, always complementing with other tools and professional advice.
Frequently asked questions
What does weighted return mean?
It is the average of the assets' returns, calculated considering each asset's weight in the portfolio. The larger the weight, the more it influences the result.
Can I use the calculator for more than 4 assets?
No, the calculator is limited to 4 assets. For more, do partial simulations or use a spreadsheet.
What if the sum of weights is not 100%?
The calculator will show a warning but still display the return. However, the result may not accurately represent the actual portfolio.
Does the calculator consider taxes or fees?
No. It only calculates the gross return. Taxes and fees reduce the net return and should be considered separately.
Can I rely on the result for investment decisions?
Use it as an initial reference, but not as the sole basis. Consider risks, time horizon, and consult a professional.