Water leak calculator
How much water can a small leak waste in a year?
Turn drips, a slow stream or a leaking toilet into litres, cubic metres and an estimated water-and-sewer cost.
✓ Instant estimate · ✓ No sign-upA complete example is already filled in. Change only the numbers you know.
Exact settings (optional)Average example values are used until you replace them.
03 · Every number explained
What the result means
Every result and starting value is shown below, with no hidden items.
A useful warning, not a meter reading
A useful warning, not a meter reading
A drip is estimated at 0.25 ml. Streams use litres per minute and toilet leaks use litres per hour. Real flow changes with pressure and the fixture, so use the result to decide what to inspect, then verify with your water meter.
Methodology and limits →Quick answers
How can I check for a hidden leak?
Turn off water-using fixtures and watch whether the meter still moves.
Does the cost include sewer charges?
Enter your combined water and sewer price per cubic metre if both are billed.
What is the quickest leak to fix?
A running toilet or visible tap drip is often easy to confirm and can run continuously.
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