Electricity Cost – Single Usage Calculator
Quickly estimate the cost of running any appliance once. Enter wattage, usage minutes, and your electricity rate to see cost and energy use.
Use the value from the appliance label or multiply volts × amps.
Use for minimum charges or pay-per-use equipment fees.
Energy Used
0.9 kWh
CO₂: 0.38 kg
Cost Breakdown
Energy: $0.16
Demand: $0
Total Cost
$0.16 per use
Moderate consumption. Track how often you run this device to estimate monthly impact.
How to Use This Calculator
Identify the appliance wattage
Use the device’s rating label or manual. For variable-speed appliances use the average wattage reported by an energy monitor.
Estimate runtime
Enter how many minutes the appliance will run for this one-off use or cycle.
Adjust rates and fees
Plug in your electricity rate. Add optional demand or flat fees and a CO₂ factor if you want environmental impact.
Formula
Energy (kWh) = (Wattage × Minutes ÷ 60) ÷ 1000
Cost = Energy × Rate + Demand Surcharge
Example: 1200 W kettle for 8 minutes → 1200 × 8 ÷ 60 ÷ 1000 ≈ 0.16 kWh. At $0.18/kWh the cost is about $0.03.
Include any per-use fees or carbon factors to see the full impact of running the appliance.
About the Single Usage Electricity Calculator
Some appliances spike your bill only when used. This calculator translates one-off appliance cycles—like drying a load of laundry or brewing coffee—into dollars and kilowatt-hours so you can plan smarter.
When to Use This Calculator
- Appliance comparison: See how much an air fryer vs oven run costs per meal.
- Event planning: Estimate electricity for workshops, parties, or pop-up events.
- Energy conservation: Identify energy-intensive habits and shift them to off-peak hours.
- Solar and battery sizing: Understand single-use loads when sizing backup systems.
Why Use Our Calculator?
- ✅ Quick snapshots: No spreadsheets required—mix wattage, runtime, and rate in seconds.
- ✅ Fee aware: Include per-use surcharges or peak-demand add-ons.
- ✅ Carbon conscious: Estimate emissions with configurable CO₂ factors.
- ✅ Mobile friendly: Check usage while shopping or scheduling energy-heavy tasks.
Common Applications
Home cooks: Compare the cost of microwave vs oven reheating.
Home gym owners: See the cost of running treadmills or saunas per session.
Small businesses: Price out electricity for commercial appliances used per customer.
Tips for Best Results
- Use energy monitoring plugs for accurate runtimes and wattages.
- Record repeatable tasks (laundry cycles, brew times) to sum monthly costs.
- Check your utility for peak/off-peak rates and adjust usage accordingly.
- Bundle similar uses (daily coffee brews) to forecast monthly totals.
Frequently Asked Questions
How do I find appliance wattage?
Check the product label, manual, or manufacturer website. For variable devices, use a watt-meter to measure typical draw.
What if my appliance cycles on and off?
Measure average wattage over a full cycle using a smart plug or energy monitor, then enter the total runtime.
Can I estimate monthly cost?
Yes. Multiply the per-use cost by the number of times you run the appliance each month.
Why include a demand surcharge?
Some utilities add per-use or peak charges for high-power equipment. Including it keeps the estimate aligned with your bill.