- How much water does a toilet use -

If you have an old style toilet, it most probably is using high amounts of water.

Dual Flushing Toilet water consumption

If you want to know how much water your toilet is using, you need to :

– First make sure that nobody else is using water at home (e.g. tap water, washing machine,…)

– Record your meter reading water consumption value

– Flush the toilet

– Record your meter reading water consumption value again

– Substract the values

If you need more information about what a water meter is or how to read a water meter, have a look to this post or the video below.

Water usage and cost calculator

Once you know your toilet’s water consumption per flush, you can estimate the daily water consumption based on how often the toilet is being used. With the daily water consumption, you can use the calculator below to water usage and water cost over a year.

You just need to adjust the values in the PARAMETERS section to your requirements and the calculator will automatically display the RESULTS section.


We know that not everyone uses liters so if you are from the US or UK you can have a look to our water consumption calculators page for calculators that will convert liters to you water units.

Convert liters to US gallons


Convert liters to UK gallons


Additional information

We have created some posts and a video to explain what a cubic meter of water is and how to read a water meter. If you are not familiar with the terms or you have doubts, have a look to this information.

All our videos can be found in YouTube, in both English and Spanish languages.

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