Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Water Heater Efficiency Calculator

Estimate your monthly water heating cost in dollars based on hot water usage, temperature settings, heater efficiency, and energy price. Use it to compare operating costs before upgrading to a more efficient unit.

Daily Hot Water Usage (gallons)

Incoming Water Temperature (°F)

Target Hot Water Temperature (°F)

Water Heater Efficiency

Energy Cost ($/kWh or $/therm)

Fill in the required fields to see your result.

Water Usage

Personal Water Footprint Calculator

Estimates total daily water consumption by combining direct household use, dietary choices, clothing purchases, car washes, and beverages. Useful for individuals wanting to understand their full environmental water impact.

Daily Direct Water Use (gallons)

Diet Type

New Clothing Items per Month (items)

Car Washes per Month (washes)

Daily Beverages (coffee, soda, etc) (servings)

Fill in the required fields to see your result.

Key differences

	Water Heater Efficiency Calculator	Personal Water Footprint Calculator
Category	Water Usage	Water Usage
Inputs required	5	5
Result	Monthly Heating Cost ($)	Daily Water Footprint (gallons)
What it does	Estimate your monthly water heating cost in dollars based on hot water usage, temperature settings, heater efficiency, and energy price. Use it to compare operating costs before upgrading to a more efficient unit.	Estimates total daily water consumption by combining direct household use, dietary choices, clothing purchases, car washes, and beverages. Useful for individuals wanting to understand their full environmental water impact.