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A shower water calculator shows litres per shower and annual usage. Standard shower heads use 8–12 L/min; water-efficient models use 6–8 L/min.

Formule

Water used = Flow rate (L/min) × Duration (min) | Standard showerhead: 9.5 L/min | Low-flow: 6.0 L/min or less

Stapsgewijze handleiding

1Litres per shower = Duration (min) × Flow rate (L/min)
2Annual = Per shower × showers per week × 52
3Water cost = Volume × water tariff
4Heating water is ~18% of home energy bills

Uitgewerkte voorbeelden

Invoer

9-minute shower, 10 L/min

Resultaat

90 L per shower; 32,850 L/year (1 shower/day)

Veelgestelde vragen

What is Shower Water?

A shower water calculator shows litres per shower and annual usage. Standard shower heads use 8–12 L/min; water-efficient models use 6–8 L/min

How accurate is the Shower Water calculator?

The calculator uses the standard published formula for shower water. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Shower Water calculator use?

This calculator works with inches, litres, percentages, watts. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Shower Water calculator use?

The core formula is: Litres per shower = Duration (min) × Flow rate (L/min). Each step in the calculation is shown so you can verify the result manually.

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