Energy & Environment
Water Savings Calculator
Find water savings from old and new litres.
This result is the amount of water saved in litres, found by subtracting the new usage from the old usage.
Formula
Savings = old - new.
How it works
For example, 100 - 60 = 40 litres saved.
FAQs
What does the Water Savings Calculator do?
It takes the values you enter and works out the water savings calculator for you, showing the result straight away.
What should I enter?
Enter ordinary numbers in the boxes above. If a value does not make sense for this calculation, the page will ask you to check it instead of showing a wrong answer.
Can I use the result for everyday math?
Yes. It is a general-purpose math helper; for professional work, still check the steps against your own working.
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Each page shows the formula it uses, so you can check the result yourself.
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