Home

Calculate Your Monthly Electric Bill

Built by Kevin Glover · @gloverbuilds · Verified formula

Estimate your monthly electricity bill from appliance usage. Find what is driving your bill up.

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

In this article

What Drives Your Electric Bill
Biggest Savings Opportunities

Consommation par Appareil

Chauffage/clim : 3 500W (46% de la facture). Chauffe-eau : 2 000-3 000W (14%). Sèche-linge : 3 000W. Lave-linge : 500W. Réfrigérateur : 150W continu. TV : 100-200W. Ordinateur : 200-400W. LED : 10W (vs 60W incandescent). Formule : watts × heures ÷ 1 000 × prix/kWh = coût.

Réduire

Les 5 plus grandes économies : thermostat connecté (-100-200 €/an), LED partout (-75-150 €), calfeutrer les fuites d'air, appareils A+++ au remplacement, et éliminer les veilles (5-10% de la facture totale).

⚡ CalcWolf Insight

The cheapest electricity is the electricity you do not use. Sealing air leaks (weatherstripping doors and caulking windows) costs $20-50 in materials and can reduce HVAC costs by 10-20%. This is the highest-ROI home improvement project possible — $20 investment saving $100-200/year.

Frequently asked questions

Quel appareil consomme le plus ?▾

Chauffage/clim : 46%. Chauffe-eau : 14%. Gros électroménager : 13%. Éclairage : 9%.

Combien coûtent les appareils en veille ?▾

5-10% de la facture totale. 50-100 €/an. Une multiprise avec interrupteur élimine ce gaspillage.

✓ 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 →