water usage Calculators
Last updated: May 2026
Daily Water Intake Calculator
Estimate the daily water intake (in liters) a person should target based on body weight and physical activity level.
Shower Water Usage Calculator
Estimate the monthly water consumed by showering based on shower length, showerhead flow rate, and how often you shower.
Lawn Irrigation Calculator
Estimate the weekly water volume required to irrigate a lawn based on its area, the grass type, and the season.
Household Water Bill Estimator
Estimate your monthly residential water bill from household size, an assumed per-person usage level, and the local volumetric water rate.
Swimming Pool Water Volume Calculator
Estimate the volume of water in a swimming pool from its length, width, average depth, and shape.
Dishwasher vs Hand Washing Calculator
Compare monthly water usage between running a dishwasher and hand washing dishes.
Rainwater Harvesting Calculator
Estimate how many litres of rainwater you can collect annually from your roof.
Drip Leak Water Waste Calculator
Find out how much water a dripping faucet wastes per year and what it costs you.
Washing Machine Water Usage Calculator
Estimate your washing machine's monthly water consumption and cost based on how many loads you do each week.
Garden Plant Watering Calculator
Calculate how many litres of water your garden needs per month based on plant type and climate zone.
Household Water Consumption Calculator
Estimate your home's daily water use by entering household size, shower habits, toilet flushes, dishwasher cycles, and laundry loads.
Swimming Pool Water Volume Calculator
Find out how many gallons your pool holds and what it costs to fill it based on shape and dimensions.
Garden Irrigation Water Calculator
Calculate the daily gallons needed to irrigate your lawn or garden based on area, plant type, climate zone, system efficiency, and watering frequency.
Water Bill Cost Analyzer
Break down your monthly water bill into base fees, tiered usage charges, and sewer fees to see exactly what you're paying and how much you could save by reducing consumption.
Rainwater Harvesting Calculator
Estimate how many gallons of rainwater your roof can collect annually and what tank size you need to meet your water goals.
Hot Water Energy Cost Calculator
Estimates your monthly water heating bill based on daily hot water use, temperature rise, energy source, and heater efficiency.
Water Leak Cost Calculator
Quantifies the water wasted and money lost from household leaks like dripping faucets and running toilets.
Personal Water Footprint Calculator
Estimates total daily water consumption by combining direct household use, dietary choices, clothing purchases, car washes, and beverages.
Greywater System Calculator
Estimates daily greywater production from showers, laundry, and sinks and projects how much can be recovered for irrigation.
Water Conservation Savings Calculator
Projects annual savings from water-efficient upgrades like low-flow showerheads, efficient toilets, and leak repairs.
Household Water Usage Calculator
Estimate your household's weekly water consumption from showers, toilets, laundry, and dishwashing.
Swimming Pool Water Calculator
Find out how many gallons your swimming pool holds and how much water evaporates monthly.
Water Heater Usage Calculator
Estimate your water heater's annual energy cost based on hot water demand and temperature rise.
Rainwater Harvesting Calculator
Estimate how many gallons of rainwater you can collect annually from your roof, capped by your tank size.
Water Bill Cost Calculator
Calculate your monthly water bill using tiered pricing, a base fee, and a sewer rate multiplier.
Car Wash Water Calculator
Estimates annual water costs for washing your vehicles by comparing home hose washing (104 gal), commercial car washes (45 gal), and waterless/efficient methods (27 gal).
Industrial Water Usage Calculator
Calculates monthly water costs for industrial operations by factoring in production volume, water recycling rate, fresh water price, and wastewater treatment expense.
Water Bill Cost Calculator
Estimates your monthly water bill using a two-tier rate structure, a fixed base charge, and a sewer multiplier — just like most municipal utilities calculate it.
Water Tank Sizing Calculator
Determines the minimum recommended water tank capacity for a home or commercial building based on occupant count, daily usage, desired storage duration, peak demand, and a safety buffer.
Appliance Water Efficiency Calculator
Calculates annual water savings and dollar savings when upgrading to a more water-efficient appliance such as a dishwasher, washing machine, or toilet.
Water Pressure & Flow Calculator
Estimate the flow rate (GPH) available at your fixtures given pipe size, supply pressure, elevation change, and pipe length.
Hot Water Heater Sizing Calculator
Find the right storage water heater capacity (in gallons) for your home based on bedrooms, bathrooms, occupants, and usage habits.
Lawn & Garden Irrigation Calculator
Calculate weekly irrigation water needs (in gallons) for your lawn and garden, accounting for climate zone, season, and rainfall credit.
Water Heater Efficiency Calculator
Estimate your monthly water heating cost in dollars based on hot water usage, temperature settings, heater efficiency, and energy price.
Drip Irrigation System Calculator
Calculate the number of drip emitters needed to water a planted area based on emitter flow rate, spacing, plant water needs, and soil type.
Aquarium Water Change Calculator
Determine how many gallons to change in your aquarium and how often, based on tank size, fish bioload, feeding habits, and filter quality.
Greywater Recycling Calculator
Estimate your household's weekly greywater output from showers, sinks, and laundry, then see how many gallons are available for garden irrigation or toilet flushing after system losses.
Hydroponic Water & Nutrient Calculator
Calculate daily water and nutrient solution consumption for your hydroponic setup based on growing area, system type, plant maturity, temperature, and light hours.