Math

Weighted Average Calculator

Built by Kevin Glover · @gloverbuilds · Verified formula

Calculate weighted average from values and weights. GPA, portfolio returns, grades. Free calculator.

📅 Updated April 2026 ✅ Formula verified 📖 4 min read 🆓 Free · No sign-up

In this article

How to Use This Calculator
Tips for Best Results

A Fórmula

Média = Σ(valor × peso) ÷ Σ(pesos). Matemática (8,0 × 4 créditos) + Português (7,0 × 3) = (32+21)÷7 = 7,57. Usada em: notas acadêmicas, índices da bolsa, avaliações com critérios diferentes.

vs Simples

Simples: (8+7)÷2 = 7,5. Ponderada: 7,57. Diferença aparece quando pesos são desiguais.

⚡ CalcWolf Insight

Your GPA, the S&P 500, and your credit score are all weighted averages. The S&P 500 is weighted by market cap. Your credit score weights payment history at 35%, utilization at 30%, length at 15%.

Frequently asked questions

Quando usar ponderada?▾

Quando elementos têm importância diferente. Notas com créditos, portfólio de investimentos.

Como calcular CR/GPA?▾

Σ(nota × créditos) ÷ Σ(créditos). O CR acadêmico brasileiro é exatamente isso.

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Kevin Glover · @gloverbuilds

Founder, CalcWolf · GLVTS · Blickr

All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →