Shower Cost Calculator
Water and heating energy your showers use per year.
Runs entirely in your browser. Nothing is sent anywhere.
How it works
- 1Enter your values.
- 2See the result update instantly as you type.
- 3Change any value to compare scenarios.
About this tool
Shower Cost Calculator: Water and heating energy your showers use per year. Type your numbers and the result is calculated instantly — no button to press, nothing to install. All math runs locally in your browser, so the values you enter are never sent anywhere.
Example
| Input | |
|---|---|
| Minutes per shower | 8 |
| Flow rate (litres per minute) | 9 |
| Showers per week (household) | 14 |
| Water + sewage price per m³ | 4.5 |
| Temperature rise (K, e.g. 10 → 38 °C = 28) | 28 |
| Energy price per kWh (heating) | 0.12 |
| Water heater efficiency (%) | 85 |
| Result | |
| Cost per year | 478.42 |
| Water per year | 52.6 m³ |
| Heating energy per year | 2,015 kWh |
| Cost per shower | 0.65 |
How do I use the Shower Cost Calculator?
Enter your values. See the result update instantly as you type. Change any value to compare scenarios.
Is the Shower Cost Calculator free?
Yes. It is completely free with no sign-up, no usage limits and no watermark.
Is my data sent to a server?
No. Everything is calculated locally in your browser. Nothing you enter is uploaded, logged or stored.
Does it work on my phone?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux — no app needed.