This **shower cost calculator** estimates the cost of taking a shower by considering main inputs, **shower length**, **flow rate**, **cost of water**, and **cost of energy** per gallon.

**Duration of the shower**(in minutes)**Flow rate of the showerhead**(in gallons or liters per minute)**Cost of water**(per gallon or liter)

If you take a **10-minute shower** with a flow rate of **2.5 gallons per minute** and the cost of water is **$0.005 per gallon**, the total water used would be:

Total Water Used =

Duration×Flow Rate=10 minutes×2.5 gallons/minute=25 gallons

**The total cost of the shower would then be:**

Total Cost =

Total Water Used×Cost per Gallon=25 gallons×0.005 dollars/gallon=0.125 dollars

## Shower Cost Calculator

Duration | Water Usage (gal) | Water Cost | Energy Usage (kWh) | Energy Cost | Total Cost | Frequency (per week) | Weekly Cost | Monthly Cost | Yearly Cost |
---|---|---|---|---|---|---|---|---|---|

2 min | 4.2 | $0.063 | 1.386 | $0.18018 | $0.24318 | 7 | $1.71 | $7.38 | $88.56 |

5 min | 10.5 | $0.1575 | 3.465 | $0.45045 | $0.60795 | 7 | $4.26 | $18.36 | $220.32 |

8 min | 16.8 | $0.252 | 5.544 | $0.72072 | $0.97272 | 7 | $6.81 | $29.27 | $351.24 |

10 min | 21 | $0.315 | 6.93 | $0.9009 | $1.2159 | 7 | $8.51 | $36.63 | $439.56 |

15 min | 31.5 | $0.4725 | 10.395 | $1.35135 | $1.82385 | 7 | $12.77 | $55.27 | $663.24 |

20 min | 42 | $0.63 | 13.86 | $1.8018 | $2.4318 | 7 | $17.03 | $73.02 | $876.24 |

30 min | 63 | $0.945 | 20.79 | $2.7027 | $3.6477 | 7 | $25.53 | $110.96 | $1,331.52 |

40 min | 84 | $1.26 | 27.72 | $3.366 | $4.626 | 7 | $32.38 | $139.18 | $1,669.92 |

60 min | 126 | $1.89 | 41.58 | $5.4054 | $7.2954 | 7 | $51.07 | $220.01 | $2,640.12 |

90 min | 189 | $2.84 | 62.37 | $8.0841 | $10.9251 | 7 | $76.47 | $329.48 | $3,973.76 |

## Shower Cost Calculator Calculation Formula

Cost = (Water Usage × Water Rate) + (Energy Usage × Energy Rate)

Where:

Water Usage= Flow Rate (gallons per minute) × Duration (minutes)Energy Usage= Energy required to heat water × Duration (minutes)

**For example…**

**Water Usage**: If a showerhead has a flow rate of**2 gallons per minute**and the shower lasts**10 minutes**: Water Usage = 2 gal/min × 10 min =**20 gallons****Water Cost**: The water rate is**$0.015 per gallon**: Water Cost = 20 gallons × $0.015/gal =**$0.30****Energy Usage**: Assuming it takes**0.33 kWh**to heat one gallon of water: Energy Usage = 20 gallons × 0.33 kWh/gal =**6.6 kWh****Energy Cost**: Electricity costs**$0.12 per kWh**: Energy Cost = 6.6 kWh × $0.12/kWh =**$0.792****Total Cost**: Water Cost + Energy Cost =**$0.30 + $0.792 = $1.092**

## How Do You Calculate the Cost of a Shower?

To calculate the cost of a shower:

**Calculate water cost**: Multiply water usage by your local water rate.**Estimate energy usage**: Calculate the energy required to heat the water used.**Determine energy cost**: Multiply energy usage by your local energy rate.**Sum up total cost**: Add water cost and energy cost.

**Example**: Let’s say you have a **2.1 gallon per minute** showerhead and take an **8-minute shower**. Your water rate is **$0.01 per gallon**, and electricity costs **$0.15 per kWh**.

Water usage: 2.1 gal/min × 8 min =

16.8 gallonsWater cost: 16.8 gal × $0.01/gal =

$0.168Energy usage: 16.8 gal × 0.33 kWh/gal =

5.544 kWhEnergy cost: 5.544 kWh × $0.15/kWh =

$0.8316Total cost:

$0.168 + $0.8316 = $0.9996

## How Much Does a 10 Minute Shower Cost?

A **10-minute shower** costs approximately **$1.22**.

Let’s use average figures for this example:

- Average flow rate:
2.1 gallons per minute- Water rate:
$0.015 per gallon- Energy rate:
$0.13 per kWh- Water usage: 2.1 gal/min × 10 min =
21 gallons- Water cost: 21 gal × $0.015/gal =
$0.315- Energy usage: 21 gal × 0.33 kWh/gal =
6.93 kWh- Energy cost: 6.93 kWh × $0.13/kWh =
$0.9009- Total cost:
$0.315 + $0.9009 = $1.2159

## How Much Does a Shower Cost Per Minute?

A **10-minute shower** costing **$0.125**

Cost per minute = Total cost / Duration

=$1.2159 / 10 minutes

=$0.12159 per minute

This means that each minute of this shower costs about **12 cents**.

To calculate the cost per minute, we can divide the total cost of a shower by its duration.

## How Much Does a 5 Minute Shower Cost?

A **5-minute shower** would cost approximately **$0.61**.

Water usage: 2.1 gal/min × 5 min =

10.5 gallonsWater cost: 10.5 gal × $0.015/gal =

$0.1575Energy usage: 10.5 gal × 0.33 kWh/gal =

3.465 kWhEnergy cost: 3.465 kWh × $0.13/kWh =

$0.45045Total cost:

$0.1575 + $0.45045 = $0.60795

## How Much Does a 1 Hour Shower Cost?

A **1-hour shower** costs approximately **$7.30**.

Water usage: 2.1 gal/min × 60 min =

126 gallonsWater cost: 126 gal × $0.015/gal =

$1.89Energy usage: 126 gal × 0.33 kWh/gal =

41.58 kWhEnergy cost: 41.58 kWh × $0.13/kWh =

$5.4054Total cost:

$1.89 + $5.4054 = $7.2954

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