Water Usage Calculator
Estimate your daily and monthly water usage from showers, toilet flushes, and laundry in gallons or liters.
Water Usage Estimate
Water usage is estimated from common household activities:
Shower = Minutes × Flow Rate (gallons or liters per minute)
Toilet = Flushes × Gallons/Liters per Flush
Laundry = Loads per Week × Gallons/Liters per Load / 7
Average water usage per activity:
| Activity | Gallons | Liters |
|---|---|---|
| Shower (per minute) | 2.0 gal | 7.6 L |
| Toilet flush | 1.6 gal | 6.1 L |
| Laundry load | 20 gal | 75.7 L |
Unit conversions:
- 1 gallon = 3.785 liters
- 1 liter = 0.264 gallons
Average US household: ~80–100 gallons (300–380 liters) per person per day