kWh/mês
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
W × h × dias / 1000
About this calculator
The kWh/month calculator is a practical tool for estimating monthly electricity consumption in kilowatt-hours (kWh). It works based on the equipment's power in watts (W), the number of hours it's used per day, and the number of days it's utilized. The formula used is straightforward: Power (W) × hours × days / 1000.
This calculation is useful for understanding the impact of different appliances on monthly electricity consumption. For example, if you have a 50W fan that runs for 8 hours a day, for 30 days, the calculation would be: 50W × 8h × 30 days / 1000 = 12 kWh/month.
It's essential to perform this calculation for various appliances and sum the results, helping to identify which equipment consumes the most energy and where savings can be made. Additionally, understanding consumption in kWh/month aids in selecting electricity plans that best suit your home or business needs.
When using this calculator, it's crucial to be mindful of the units of measurement and ensure that the input values are accurate. Small errors in input data can lead to significant discrepancies in the final results.
Frequently asked questions
How does the kWh/month calculator work?
The calculator estimates monthly electricity consumption based on equipment power, daily usage hours, and number of days.
What units should I use for power, hours, and days?
Use watts (W) for power, hours (h) for daily usage, and days for the usage period.
Why is it important to calculate consumption in kWh/month?
To understand the impact of appliances on energy consumption and identify savings opportunities.
Does the calculator consider energy consumption peaks?
No, it provides an average estimate based on input data.
Can I use this calculator for any type of equipment?
Yes, as long as you know the power, daily usage time, and number of days of use.