Building Services Tools

Free building services calculators — water tank capacity in litres and gallons for any tank shape and fill level, with duct, septic and acoustics tools next.

1 tool
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Building Services tools

Water Tank Capacity

Measure a rectangular, upright or horizontal tank to get its capacity and current contents in litres, US and UK gallons, plus the time to fill it.

Why These Tools

Pipes, ducts, tanks and fans are what make a finished shell usable, and they are sized by arithmetic that is easy to get slightly wrong. Water Tank Capacity Calculator handles the most common case: measure a rectangular, upright or horizontal tank, and it gives the volume in litres and both kinds of gallon, the water in it at a given depth, and how long a pump or supply takes to fill it.

Septic tank sizing, HVAC duct sizing, room acoustics and fire sprinkler layouts are planned for this page next.