Electricity Cost ماشینحساب
از Electricity Cost ماشینحساب برای دریافت نتایج سریع و دقیق استفاده کنید.
نحوه استفاده از این ماشین حساب
- Wattage (W) را وارد کنید
- Hours per Day را وارد کنید
- Price per kWh ($) را وارد کنید
- روی دکمه محاسبه کلیک کنید
- نتیجه نمایش داده شده در زیر ماشین حساب را بخوانید
How Electricity Bills are Calculated
Electricity is billed in kilowatt-hours (kWh). One kWh = running a 1,000W (1 kW) device for exactly 1 hour. To calculate consumption: kWh = (Watts × Hours per day × Days) / 1,000.
A 100W light bulb running 8 hours/day for 30 days: (100 × 8 × 30) / 1,000 = 24 kWh. At $0.15/kWh, that costs $3.60/month. A 1,500W space heater running 6 hours/day all month: 270 kWh = $40.50/month.
Average US Electricity Costs
The US average residential electricity rate is approximately $0.13–0.16/kWh (2024), with significant state variation: Hawaii (~$0.39), California (~$0.26), Louisiana (~$0.11), Oklahoma (~$0.11). The average US household uses about 900 kWh/month.
Major electricity consumers in a typical home: HVAC (45%), water heater (18%), lighting (9%), washer/dryer (7%), refrigerator (5%). Targeting HVAC and water heating offers the biggest savings.
Reducing Your Electricity Bill
Most impactful changes: switch to LED bulbs (75% less energy than incandescent), upgrade to a smart thermostat (save 10–15% on HVAC), wash clothes in cold water, use power strips to eliminate standby power (phantom load), ensure proper home insulation, run dishwashers and laundry during off-peak hours. Solar panels can offset 50–100% of household electricity depending on location and system size.
Frequently Asked Questions
How much does it cost to run a TV?
A modern 55-inch LED TV uses 60–150W. Running it 5 hours/day at $0.15/kWh costs $1.35–$3.38/month. Older plasma TVs used 300–500W — up to 5x more. OLED TVs vary widely based on brightness.
What uses the most electricity in a home?
Heating and cooling (HVAC) typically accounts for 40–50% of residential electricity use. Water heating, refrigerators, washer/dryers, and lighting follow. In winter climates, an electric space heater running all day can easily double your electricity bill.
What is the difference between kW and kWh?
kW (kilowatt) is a unit of power — the rate of energy use at any instant. kWh (kilowatt-hour) is a unit of energy — the total amount used over time. Your electricity bill charges for kWh, not kW. A 2 kW device running for 3 hours uses 6 kWh.
مصرف انرژی لوازم برقی خانگی
مرجع مصرف انرژی لوازم برقی خانگی.
| لوازم برقی | توان (وات) | نرخ انرژی | مصرف روزانه معمول |
|---|---|---|---|
| LED Bulb (10W) | 10 W | 0.01 kWh/hour | 0.24 kWh/day |
| Incandescent Bulb (60W) | 60 W | 0.06 kWh/hour | 1.44 kWh/day |
| Laptop Computer | 15–60 W | 0.04 kWh/hour | 0.5 kWh/day |
| Desktop Computer | 150–300 W | 0.2 kWh/hour | 1.5 kWh/day |
| Refrigerator | 100–200 W | 0.1–0.2 kWh/hour | 1.5 kWh/day |
| Microwave | 700–1500 W | 0.7–1.5 kWh/hour | 0.3 kWh/day (use) |
| Washing Machine | 500–2000 W | 0.5–2.0 kWh/cycle | 1 kWh/cycle |
| Tumble Dryer | 2000–5000 W | 2–5 kWh/cycle | 3 kWh/cycle |
| Electric Kettle | 2000–3000 W | 2–3 kWh/hour | 0.11 kWh/boil |
| Air Conditioner | 1000–3500 W | 1–3.5 kWh/hour | 5 kWh/day |
| Electric Car Charger (7kW) | 7000 W | 7 kWh/hour | 10 kWh/charge |
آخرین بهروزرسانی: March 2026