Chuveiro elétrico mensal
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The monthly savings calculator for electric showers estimates energy cost reductions by adjusting usage time or power settings. It calculates savings by multiplying the shower's wattage (W) by the average daily usage time (converted from minutes to hours) and the number of days in a month. The result is divided by 1000 to convert to kilowatt-hours (kWh), the standard unit for electrical energy.
To use it, input the shower's wattage and your average daily usage in minutes. The calculator assumes 30 days per month and converts daily time to hours. For example, a 5500 W shower used 10 minutes daily will show monthly savings based on these values. This tool helps users reduce energy costs by comparing lower-power showers or reducing high-heat mode usage.
Note that actual savings depend on factors like daily usage variations, shower efficiency, and local energy tariffs. The calculation assumes constant daily use and does not include other energy sources, such as water heaters or bathtubs. Cross-check results with your monthly energy bill for more accurate adjustments.
Frequently asked questions
Why does the formula use 30 days?
The formula uses 30 days as a simplified average for monthly calculations, regardless of the actual number of days in the month.
Does the calculation work if I use the shower less than 15 minutes daily?
Yes, just input your actual daily usage time. The calculator automatically adjusts minutes to hours for the calculation.
How does shower wattage affect savings?
Higher-wattage showers (e.g., 5500 W) consume more energy. Switching to lower-power modes or reducing high-heat usage increases savings.
Can I use this calculator for other appliances?
The basic formula can be adapted but is designed specifically for showers. Other appliances may require different calculations, such as accounting for duty cycles or intermittent use.