可持续发展
即时、私密且免费
家电用电成本计算器.
计算家用电器每日、每月和每年的用电量及电费
输入数值
输入时结果会更新。
使用方法
Energy = watts × hours ÷ 1,000. Monthly estimates use 30 days; yearly estimates use 365 days.
Actual appliance draw may cycle below the nameplate rating. Treat the result as an estimate.
相关计算器
Cite this calculator
Canonical URL: https://mathify.one/zh/sustainability/appliance-energy
Cite as: Mathify. (2026). 家电用电成本计算器. https://mathify.one/zh/sustainability/appliance-energy
Use Cases
Budgeting for Household Energy Costs
Plan your monthly and yearly electricity expenses by estimating the cost of running each appliance. This helps you allocate your budget and identify high-consumption devices.
Example: Estimate the annual cost of running a 1500W space heater for 3 hours a day at $0.15/kWh.
Comparing Appliance Efficiency
Compare the energy consumption of different appliances or models to decide which is more cost-effective in the long run, especially when considering upgrades.
Example: Compare a 100W TV used 4 hours/day versus a 200W TV used 2 hours/day to see which costs less annually.
Frequently Asked Questions
- How does the Appliance Energy Cost Calculator work?
- Enter the appliance's power rating in watts, average daily usage in hours, and your electricity rate in USD per kWh. The calculator computes daily, monthly, and yearly energy consumption in kWh and the corresponding cost based on your inputs.
- What are the common presets in this calculator?
- The calculator includes presets for typical household appliances like refrigerators, air conditioners, washing machines, and more. These presets provide approximate power ratings to help you quickly estimate energy usage without needing to look up specifications.
- Can I use this calculator for any appliance?
- Yes, you can use it for any appliance by entering its specific power rating (in watts), daily usage hours, and your electricity rate. This allows you to estimate energy consumption and cost for devices not included in the presets.
Tips & Common Mistakes
Tips
- Use the actual power rating from the appliance label or manual for the most accurate estimate.
- Consider seasonal usage patterns—some appliances like heaters or air conditioners are used more in certain months.
- Check your electricity bill for the exact rate you pay per kWh, including taxes and fees.
- Use the calculator to identify energy-hungry appliances and explore ways to reduce their usage.
Common Mistakes to Avoid
- Entering power in kilowatts instead of watts—ensure you use watts as the unit.
- Using the maximum power rating instead of the average power consumption, which can vary during operation.
- Forgetting to account for standby power consumption of devices that are plugged in but not in active use.
Last updated: August 13, 2026