如何计算Appliance Running Cost

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

公式

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

分步指南

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

例题解析

输入

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

结果

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

常见问题

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.

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