Tính tiền điện

What Is an Electricity Cost Calculator?

An electricity cost calculator estimates how much a specific appliance costs to run based on its power rating (watts), hours of daily use, and your local electricity rate (kWh price). It computes daily, monthly, and annual costs.

Electricity bills are often opaque about which devices drive costs. This tool makes consumption visible so you can identify high-cost appliances and make informed decisions about usage habits or replacements.

How to Calculate Electricity Cost

1. Enter the appliance power consumption in watts
2. Input daily usage hours or monthly hours
3. Enter your electricity rate per kilowatt-hour
4. View daily, monthly, and annual costs

Features

• Calculate electricity cost for any appliance
• Show energy consumption in kilowatt-hours
• Compare costs across different appliances
• Estimate annual expenses and savings opportunities

Common Use Cases

• Estimating the annual cost of running an air conditioner or electric heater
• Comparing the running cost of an old appliance vs. a new energy-efficient model
• Understanding the electricity cost of a home office setup for tax or budgeting purposes

Why Use ToolPop Electricity Cost Calculator

• Returns daily, monthly, and annual cost estimates from three simple inputs
• Accepts any local electricity rate, covering rates from any country or tariff
• Makes consumption visible so you can prioritize energy-saving actions

ToolPop vs Energy Monitoring Plugs

Smart plugs measure real power draw but cost money and require physical installation. ToolPop uses the rated wattage from the appliance label for an instant estimate — good enough for planning decisions without any hardware.

Tips

• Air conditioning and heating are typically the largest energy users
• LED bulbs use 75% less energy than incandescent bulbs
• Unplugging devices reduces phantom energy drain

Frequently Asked Questions

How do I find my appliance's wattage?

Check the label on the back or bottom of the appliance, or search the model number online. Typical ranges: refrigerator 150-800W, AC 3000-5000W.

What's phantom power drain?

Devices use power even when off if plugged in. Reduce phantom drain by unplugging devices or using power strips you can turn off.

Will my utility information be kept private?

Yes, all electricity cost calculations happen in your browser. Your utility information is never stored or transmitted.