Water Calculators

Compared to the national average: how much water do you use? Try our water use calculator to get an accurate estimate on how much water you use in your daily life.

Residential Commercial

Today's average American homes often use in excess of 400 gallons of water per day. Depending on a range of variables from location to family size, your individual numbers can fluctuate. Find out where your home stands:

Home Information
houses
Choose your calculation unit:
Number of residents:
 
 
Your Home
US Average
Your Water Efficient Home
Toilets
per flush:
Flushes per person per day:
Water use (/day):
Showerheads
per minute:
Minutes per person per day:
Water use (/day):
Bathroom Sink Faucets
per minute:
Minutes per person per day:
Water use (/day):
Kitchen/Dining Area Faucets
per minute:
Minutes per person per day:
Water use (/day):
Clothes Washer
Do you have a clothes washer?
per day:
Water use (/day):
Dishwasher
Do you have a dishwasher?
per day:
Water use (/day):
 
Leaks
per day:
 
Water use (/day):
 
 
Your Home
US Average
Your Water Efficent Home
Calculation Results
per person per day:
per day:
per month:
per year:
% Reduction vs. average:
 
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CommercialCommercial

This calculator will assist in estimating your commercial building's water usage in comparison to the U.S. average and the LEED baseline. This tool is for illustration purposes only.

Building Information
Buildings
Choose your calculation unit:
Days per year the building is occupied:
Number of male occupants:
Number of female occupants:
 
 
Your Building
US Average
LEED Baseline
Toilets
per flush:
Flushes per person per day (men):
Flushes per person per day (women):
Water use (/day):
Urinals
per flush:
Uses per males per day:
Water use (/day):
Bathroom Sink Faucets
per minute:
Minutes per person per day:
Water use (/day):
Showers
per minute:
Average shower duration per person (min.):
% of staff using showers:
Water use (/day):
Kitchen/Dining Area Faucets
per minute:
Minutes per person per day:
Water use (/day):
 
Your Building
US Average
LEED Baseline
Calculation Results
per person per day:
per day:
per month:
per year:
% Reduction vs. average:
% Reduction vs. LEED Baseline:
Products That Match Your Criteria
Bathroom Products
See Faucets with low-flow aerator options:
.
CommercialCommercialHospitality

This calculator will assist in estimating your hotel or other hospitality building return on investment when you replace your old water appliances with water-efficient ones. This tool is for illustration purposes only.

Hotel Information
Name:
City:
State:
Building Information
Hotel
Energy source for heating water:
Number of Rooms:
Average Occupancy:
%
Guest Information
Business Traveler:
%
 
Guests / Room
Leisure Traveler:
%
 
Guests / Room
Water Usage
Water Usage for each Guest
Toilet Uses / Day
 
Handwashing Uses / Day
 
Seconds / Use for Handwashing
 
Additional Faucet Usage (seconds)
 
Showers / Day
 
Length of Shower (minutes)
Water Usage for Housekeeping
Flushes / Cleaning
 
Seconds used for Cleaning
 
Shower Usage (minutes)
Energy Data
Incoming Water Temp (deg F)
 
Showering Water Temp (deg F)
 
Handwashing Water Temp (deg F)
 
Water Heater Efficiency
 
Cost of Energy - Natural Gas (therm)
Water and Sewer Rates
Water Rate (per 1000 gallons)
 
Sewer Rate (per 1000 gallons)
Cost Related to Outdated Plumbing
Hours for Maintenance (per day)
 
Cost of Labor (per hour)
 
Repair / Replacement $ (per month)
 
Percentage of Leaking Toilets
 
Average Leakage per day (gallons)
Fixture / Faucet Information
 
Water Closets
Lavatory Faucets
Showerheads
Existing Fixture Water Consumption (gpf / gpm)
Water Efficient Fixture Consumption (gpf / gpm)
Estimated Material Cost (each)
 
Water Closets
Lavatory Faucets
Showerheads
Calculated Savings and Payback Period
Percent Water Savings
Annual Water Savings (gallons)
Annual Water Cost Savings
Annual Energy Cost Savings
Total Investment for Materials
Annual Water and Energy Cost Savings
Annual Costs Resulting from Outdated Plumbing
Total Payback Period for Materials
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