Electricity Cost
Electricity costs sneak up on households because individual appliances seem cheap to run — until you add them all up. Our calculator lets you see the cost of any appliance over hours, days, months, or years, compare multiple appliances, and identify which devices are driving your electric bill.
Coût annuel
$
À propos de Electricity Cost Calculator
Electricity costs sneak up on households because individual appliances seem cheap to run — until you add them all up. Our calculator lets you see the cost of any appliance over hours, days, months, or years, compare multiple appliances, and identify which devices are driving your electric bill.
Comment l'utiliser
- Enter the appliance wattage (found on the device label or manual).
- Enter hours per day and your electricity rate ($/kWh — check your bill).
- See cost per hour, day, month, and year.
- Add multiple appliances to calculate total household electricity cost.
Formule et méthodologie
kWh per day = watts × hours per day / 1,000. Monthly kWh = kWh/day × 30.44. Monthly cost = monthly kWh × rate ($/kWh). US average: $0.16/kWh (2024). Annual cost = kWh/day × 365 × rate. Standby power ("vampire power"): average US home wastes 5–10% of energy on idle electronics.
Cas d'usage courants
- Identifying energy hogs: electric heaters (1,500W) vs LED bulbs (10W)
- Deciding whether an energy-efficient appliance pays for itself
- Budgeting for a new appliance: "how much will this AC add to my bill?"
- EV charging cost: battery kWh × rate = cost per full charge
- Solar panel sizing: knowing total household kWh consumption
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Gratuit pour usage personnel et commercial. Copiez simplement le code ci-dessous.