learn.howToCalculate

learn.whatIsHeading

Appliance running cost calculators show how much electricity a device uses and costs based on wattage, hours of daily use, and local electricity price.

Công thức

kWh/day = Watts × Hours / 1,000 | Cost/day = kWh × Price per kWh | Annual cost = Daily cost × 365

Hướng dẫn từng bước

1kWh/day = Watts × Hours / 1,000
2Cost/day = kWh × Price per kWh
3Annual cost = Daily cost × 365
4Compare before and after to calculate savings from upgrades

Ví dụ có lời giải

đầu vào

2,000W electric heater, 4h/day, £0.28/kWh

Kết quả

Daily: 8kWh × £0.28 = £2.24; Annual: £817.60

Câu hỏi thường gặp

What is Appliance Energy?

Appliance running cost calculators show how much electricity a device uses and costs based on wattage, hours of daily use, and local electricity price. Use this calculator for accurate, instant results.

How accurate is the Appliance Energy calculator?

The calculator uses the standard published formula for appliance energy. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Appliance Energy calculator use?

This calculator works with inches, kilowatts, watts. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Appliance Energy calculator use?

The core formula is: kWh/day = Watts × Hours / 1,000. Each step in the calculation is shown so you can verify the result manually.

Sẵn sàng để tính toán? Dùng thử Máy tính Appliance Running Cost miễn phí

Hãy tự mình thử →