The most powerful free weighted average calculator for finance professionals. Compute portfolio returns, weighted average cost of capital (WACC), asset allocation performance, and investment-weighted metrics with live interactive charts and real-time formula breakdowns.
Enter your assets to compute weighted portfolio return and WACC.
A weighted average in finance assigns different importance to each financial metric based on its monetary size or significance. For example, portfolio returns are weighted by the dollar amount invested in each asset — a $100,000 stock position influences the overall return far more than a $5,000 bond holding. This finance-specific calculator automates the entire process.
Simple averages mislead in finance. If you earn 20% on a $10,000 investment and lose 5% on a $90,000 investment, the simple average is 7.5% — but your actual return is -2.5%. The weighted average calculator for finance prevents this critical error by factoring in position sizes.
Type each financial metric into the 'Value' column — returns, interest rates, expense ratios, or any financial data you want to average across your portfolio or investment analysis.
Enter the weight for each value. In finance, weights are typically dollar amounts invested, portfolio allocation percentages, or position sizes. The calculator accepts any positive numbers.
The finance weighted average calculator computes your result instantly. See the weighted mean return, sum of products, sum of weights, and all interactive charts update in real time.
The finance weighted average formula: multiply each asset return by its dollar allocation, sum those products, then divide by the total invested capital. This produces the true weighted portfolio return — not the misleading simple average.
Enter each asset return alongside its investment amount. For example: Stocks 12% ($50,000), Bonds 5% ($30,000), and Real Estate 8% ($20,000).
The calculator multiplies each return by its dollar weight. Stocks: 12 × 50,000 = 600,000, Bonds: 5 × 30,000 = 150,000, Real Estate: 8 × 20,000 = 160,000.
600,000 + 150,000 + 160,000 = 910,000. This is the numerator in the weighted average formula.
Sum the capital: 50,000 + 30,000 + 20,000 = 100,000. This is the denominator.
910,000 ÷ 100,000 = 9.10%. The calculator shows this instantly — the true portfolio return, not 8.33% (simple average).
Averaging asset returns without weighting by allocation produces misleading results. A 20% return on $10K and -5% on $90K is not +7.5%. The finance calculator weights correctly.
Dividing total returns by asset count instead of total capital is wrong. The finance weighted average calculator always divides by the sum of allocations.
Swapping the return percentage with the dollar allocation produces a completely wrong weighted average. The calculator's labeled columns prevent this mix-up.
Multiply each asset return by its dollar allocation. Sum those products. Sum all allocations. Divide. The finance weighted average calculator automates this entire workflow.
Use the finance weighted average calculator to compute true portfolio returns. Edit the returns and allocations below to see the result update instantly.
The weighted average return is 9.10%, not 8.33% (simple average). Stocks dominate because they have the largest allocation ($50,000). The finance calculator shows how position sizes determine your true return.
Calculate the weighted average cost of capital (WACC). Edit the cost of each capital source and its proportion below.
The WACC is 9.40%, reflecting the blended cost of all capital sources weighted by their proportion in the capital structure. Equity has the highest cost but the largest weight.
Calculate the true weighted average return of a multi-asset portfolio by weighting each asset's return by its dollar allocation.
Compute the weighted average cost of capital by weighting each financing source (equity, debt, preferred) by its proportion.
Calculate weighted average yield-to-maturity across bond holdings, weighting by par value or market value.
Compute risk-adjusted weighted returns across asset classes where allocations represent portfolio positions.
Investment weights must be positive. The finance calculator requires positive weights (dollar amounts or percentages). A weight of zero means the asset is excluded from the portfolio calculation entirely.
Equal allocations = simple average. If every asset has the same dollar allocation, the weighted average return equals the simple average — same formula, same result. Unequal allocations are where weighted averages shine.
Weighted return always falls between best and worst assets. No matter how you allocate capital, the portfolio's weighted average return will always be between the lowest and highest individual asset returns.
Larger positions dominate the weighted return. The larger an allocation relative to the total portfolio, the more the weighted return is pulled toward that asset's individual performance. This is the key insight of portfolio weighted averages.
Fifteen purpose-built weighted average calculators — each tailored to a specific domain with unique inputs, outputs, and interactive visualizations.
Calculate your final grade using weighted assignments, exams, and projects.
Compute your grade point average across multiple courses.
Apply a weighted moving average to time-series data.
Portfolio returns, WACC, and investment-weighted metrics with real-time breakdowns.
Inventory valuation, unit costs, and supplier comparison with quantity weighting.
Blended pay rates, overtime costs, and department salary analysis by headcount.
Weighted durations, delivery estimates, and PERT scheduling by task frequency.
Weighted mean, variance, standard deviation, and coefficient of variation analysis.
Compute the weighted arithmetic mean from data values with different frequencies or importance weights.
Compute composite scores from weighted categories for rubrics, tests, and evaluations with letter grades.
Calculate VWAP, average purchase price, and procurement costs weighted by quantity or volume.
Compute true portfolio returns by weighting each asset's performance by its dollar allocation.
Combine ratings from multiple review sources weighted by review count or credibility.
Compute blended interest rates across loans, savings, and credit lines weighted by balance.
Analyze blended profit margins across products, services, and segments weighted by revenue.
A weighted average in finance calculates the mean return, cost, or rate across multiple financial instruments where each is weighted by its monetary value or allocation. For example, portfolio returns are weighted by dollar amounts invested, and WACC is weighted by the proportion of each capital source.
Multiply each asset's return by its dollar allocation, sum all products, then divide by the total portfolio value. For example: Stocks (12% × $50K) + Bonds (5% × $30K) + Real Estate (8% × $20K) = $910K ÷ $100K = 9.10% weighted average return.
Simple average treats all investments equally regardless of size. If you earn 20% on $10,000 and lose 5% on $90,000, the simple average shows +7.5% — but you actually lost money. Weighted average correctly shows -2.5%, reflecting the true portfolio performance.
WACC (Weighted Average Cost of Capital) is the blended cost of all capital sources — equity, debt, and preferred stock — weighted by their proportion in the company's capital structure. It represents the minimum return a company must earn to satisfy all capital providers.
Yes, the calculator handles negative values (losses) in the return column. Weights (dollar allocations) should be positive. This allows you to accurately compute portfolio returns that include losing positions alongside winning ones.