Electricity Usage & Power Consumption Calculator
Add your appliances below to calculate total energy consumption.
| Appliance Name | Power (W) | Usage (hrs/day) | Remove |
|---|---|---|---|
Results
Estimate your electricity usage, energy consumption, and electricity bills for homes, offices, and industrial setups. This tool helps you calculate energy usage in kWh and the cost based on your local tariff.
How to Calculate Power Consumption
The standard formula used by our calculator is:
Energy (kWh) = Power (W) × Hours Used ÷ 1000
Example: A 1500W heater running for 4 hours = 1500 × 4 ÷ 1000 = 6 kWh. If your electricity rate is $0.15/kWh, the cost will be 6 × 0.15 = $0.90.
Appliance Electricity Usage
| Appliance | Power (W) | Usage (hrs/day) | Daily Consumption (kWh) |
|---|---|---|---|
| Tube Light | 40 | 6 | 0.24 |
| Energy Saver | 25 | 6 | 0.15 |
| LED Bulb | 7 | 6 | 0.042 |
| Fan | 100 | 8 | 0.8 |
| TV | 250 | 5 | 1.25 |
| LED TV 32″ | 50 | 5 | 0.25 |
| Washing Machine | 800 | 3 | 2.4 |
| Refrigerator | 350 | 24 | 8.4 |
| Freezer | 350 | 24 | 8.4 |
| Computer | 250 | 8 | 2 |
| Water Pump 1HP | 700 | 2 | 1.4 |
| Iron | 1000 | 1 | 1 |
| Split AC 1 Ton | 1800 | 8 | 14.4 |
| Split AC 1.5 Ton | 2400 | 8 | 19.2 |
| Split AC 2 Ton | 3000 | 8 | 24 |
| Inverter AC 1 Ton | 1000 | 8 | 8 |
| Inverter AC 1.5 Ton | 1500 | 8 | 12 |
| Inverter AC 2 Ton | 2000 | 8 | 16 |
Regional Electricity Cost Examples
- Pakistan: 1 unit = 1 kWh, approx ₨65/unit → 500 units = ₨32,500.
- UK: Average rate £0.30/kWh → 2000W heater for 24h = ~£14.40/day.
- India: ₹8/kWh → 100W fan running 24h = ₹19.20/day.
Quick Conversion Reference
- Watts → kWh: 1000W for 1h = 1 kWh
- Units: 1 unit = 1 kWh
- Cost: kWh × Local Tariff
FAQs – Electricity Usage Calculator
- How do you calculate power consumption at home?
- Multiply appliance wattage × usage hours ÷ 1000.
- Which appliances consume the most electricity?
- Air conditioners, heaters, refrigerators, and ovens.
- How to reduce electricity bills?
- Use energy-efficient appliances, LED lighting, and solar panels.
- Is 50 kWh/day a lot for a home?
- Yes. A typical home consumes ~1500 kWh/month.
- What is the electricity bill for 500 units in Pakistan?
- ₨65 per unit → ~₨32,500.
- What is the power consumption of a 1.5 ton AC?
- ~1.5–2 kWh per hour.
Power Consumption Calculator – Estimate Energy Use & Electricity Bills
To calculate power consumption, use the formula:
Power (W) × Hours Used ÷ 1000 = Energy in kWh
👉 Example: A 1500W heater running for 4 hours = 1500 × 4 ÷ 1000 = 6 kWh.
If electricity costs $0.15/kWh, the bill will be 6 × 0.15 = $0.90.
This calculator helps you instantly estimate appliance energy use, daily load, and electricity costs for homes, offices, or industries.
What is a Power Consumption Calculator?
A power consumption calculator is an online tool that estimates how much electricity your appliances use. By entering the wattage (W), voltage (V), current (A), and usage time (hours), it calculates:
kWh (kilowatt-hours) consumed
Cost per day, month, or year based on local tariff rates
Appliance comparisons to spot high-energy devices
This tool works for homes, offices, and industrial setups.
How to Calculate Power Consumption (Formula)
The standard formula:
Example: A 1500W heater running for 2 hours consumes:
1500×2÷1000=3 kWh
At $0.20/kWh, that’s $0.60 per use.
Power Consumption Calculator for Home Appliances
Different appliances use electricity differently. Here’s an overview:
| Appliance | Average Wattage | Daily Use | Daily Consumption (kWh) | |
|---|---|---|---|---|
| Ceiling Fan | 75W | 12 hrs | 0.9 kWh | |
| 1.5 Ton AC | 1500W | 8 hrs | 12 kWh | |
| Refrigerator (300L) | 180W | 24 hrs | 4.3 kWh | |
| LED TV (42”) | 120W | 5 hrs | 0.6 kWh | |
| Washing Machine | 500W | 1 hr | 0.5 kWh | |
| Electric Heater | 2000W | 3 hrs | 6 kWh |
👉 Use our calculator to enter exact hours of use and local electricity rate for accurate results.
Regional Usage Examples
Pakistan: 1 unit = 1 kWh. Current tariff (approx ₨65/unit) → 500 units = ₨32,500 bill.
UK: Average electricity rate = £0.30/kWh. Running a 2000W heater for 24h costs ~£14.40/day.
India: ₹8/kWh. A 100W fan running 24h = ₹19.20/day.
Power Consumption for Different Use Cases
Air Conditioners (AC):
A 1.5 ton AC consumes ~1.5–2 kWh per hour. That’s 36–48 kWh per day if run 24 hours.Refrigerators:
A 300L fridge typically consumes 100–180 kWh/month.Computers & PCs:
Office PC: 200W → ~50 kWh/month
Gaming PC: 500–800W → 120–200 kWh/month
3-Phase Motors / Industrial Loads:
For factories, motors are calculated with volts × amps × √3 ÷ 1000 to get kW.
Quick Conversion Reference
Watts → kWh:
1000W for 1h = 1 kWh
500W for 2h = 1 kWh
Units (kWh):
1 Unit = 1 kWh
600 kWh = 600 Units
Costing:
Cost = kWh × Local Tariff
FAQs on Power Consumption Calculator
Q1: How do you calculate power consumption at home?
By multiplying appliance wattage × usage hours ÷ 1000.
Q2: What is the electricity bill for 500 units in Pakistan?
At ₨65 per unit → ~₨32,500.
Q3: Is 50 kWh a day a lot?
Yes. For a typical home, 50 kWh/day = ~1500 kWh/month, which is high.
Q4: What is the power consumption of a 1.5 ton AC?
~1.5–2 kWh per hour.
Q5: Which appliances consume the most electricity?
Air conditioners, heaters, refrigerators, and ovens.
Q6: How to reduce electricity bills?
Use energy-efficient appliances, LED lighting, and solar systems.