This shower water usage reference table shows the water used for a range of shower flow rate values, assuming a shower length of 8 minutes. Every figure is computed with the same engine that powers our Shower Water Usage Calculator, so the numbers are exact.
| Shower flow rate | Water used |
|---|---|
| 2.3 litres/min | 18.4 |
| 4.5 litres/min | 36.0 |
| 6.8 litres/min | 54.4 |
| 9 litres/min | 72.0 |
| 14 litres/min | 112.0 |
| 18 litres/min | 144.0 |
| 27 litres/min | 216.0 |
| 45 litres/min | 360.0 |
| 63 litres/min | 504.0 |
| 90 litres/min | 720.0 |
How to use this table
Find the row closest to your shower flow rate and read across to the water used. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Shower Water Usage Calculator for a precise answer.
Need a value that is not in the table? — the Shower Water Usage Calculator does it instantly, for free, with the formula and a worked example built in.
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