WATER CALCULATOR
Bathtub filling calculator
Estimate water volume and the usage charge for bathtub filling.
How this calculation works
Flow × minutes × uses per day × days gives litres. Divide by 1,000 and multiply by the water price per cubic metre. Use measured tap litres per minute and minutes spent filling each bath. Sewer, fixed fees and heating costs are excluded.
Before you use the result
This is an illustrative estimate, not a provider quote or your actual bill. Enter your current rates and charges from your plan or latest statement. Prices, billing rules and coverage can change.
Find your provider
Thames Water · Houston Water · Search all providers
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