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Calculate Electricity Cost for Any Appliance

Built by Kevin Glover · @gloverbuilds · Verified formula

Select common household appliances to see daily, monthly, and annual electricity costs at your local rate.

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

In this article

How Appliance Energy Costs Are Calculated
Top Energy-Saving Actions

Custo por Aparelho

Fórmula: watts × h/dia × 30 ÷ 1.000 × tarifa/kWh. Geladeira (150W contínuo): ~R$25-40/mês. Chuveiro elétrico (5.500W × 15min × 4): ~R$60-90. AR (1.400W × 8h): ~R$100-150. Chuveiro + AR = 50-60% da conta brasileira.

Maiores Vilões

Chuveiro: 25-30%. AR: 20-30%. Geladeira: 10-15%. A troca para LED e isolamento térmico no telhado são os investimentos mais rentáveis em eficiência energética.

⚡ CalcWolf Insight

Appliance energy calculator gets steady traffic year-round with spikes during summer (AC) and winter (heating). The utility and energy audience is valuable for smart home, solar, and energy efficiency advertisers ($4-10 CPC).

Frequently asked questions

Qual aparelho gasta mais?▾

Chuveiro elétrico: 25-30%. AC: 20-30%. Geladeira: 10-15%.

Standby custa caro?▾

5-10% da conta. R$10-50/mês. Régua com interruptor elimina o desperdício.

✓ Math logic verified against primary sources → See our verification process

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 →