Shower Cost Calculator
What a single shower costs in water and the energy to heat it. Try cutting your shower by 2 minutes and watch the number drop.
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What a single shower costs in water and the energy to heat it. Try cutting your shower by 2 minutes and watch the number drop.
How to use Shower Cost Calculator
- Open the toolNo signup and nothing to install; it works as soon as the page loads.
- Set “Minutes”
- Set “Flow rate (L/min)”
- Set “Water + heat ($/m³)”
- Read the resultChange any input and the result is recalculated immediately.
Worked example with the defaults
- PER SHOWER · 8 min at 9 L/min
- $0.36
Nothing you enter leaves your device
All of the work happens inside your browser. Whatever you type is never packaged up and sent to a server, and no request this page makes carries it.
That makes it safe for contract amounts, personal details and internal documents you would rather not hand to a third party — close the tab and it is gone.
What this tool does not do
Shower Cost Calculator only does what a browser can do on its own — it talks to no backend service. So it keeps no history for you and syncs nothing across devices; if you need a record, copy or download the result.
It is also not a substitute for professional judgement. For legal, medical or tax decisions, treat the output as a starting point rather than a final answer.
Frequently Asked Questions
- What flow rate should I use?
- Old showerheads: 12-18 L/min. Low-flow heads: 6-9 L/min. Check your head label or measure with a jug and timer.