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Calcimator

Smart Irrigation Savings Calculator

Estimate water and cost savings from upgrading to a smart irrigation controller with weather-based scheduling.

Inputs

sq ft
$
months

Results

Water Savings

25%

Annual Water Saved4,650 gallons
Annual Cost Savings$48.00
Payback Period23 months
Controller Cost$180.00
How to Use This Calculator
  1. Enter your Lawn Sq Ft and Current Monthly Water Bill to establish a baseline water spend.
  2. Input Irrigation Months per year and select your Current System Type (timer-only, soil sensor, etc.).
  3. Review Water Savings % to see the efficiency gain a smart controller provides over your current system.
  4. Check Annual Water Saved (gallons) and Annual Cost Saved to quantify the financial benefit.
  5. Enter Controller Cost to see the Payback Months — most smart controllers pay back in 1–2 seasons.
  6. Use the annual savings result to compare smart controller brands and decide on the right upgrade level.

What each input means

Lawn / Garden Area
Total irrigated area including lawn, garden beds, and landscaping.
Monthly Water Bill (Summer)
Your average monthly water bill during irrigation season.
Irrigation Months
Number of months per year you run your irrigation system.
Current System Type
0 = Manual (hose/sprinkler), 1 = Timer-based, 2 = Basic smart controller.

What each result means

Water Savings
Percentage reduction in outdoor water usage from smart scheduling.
Annual Water Saved
Estimated gallons of water conserved per year.
Annual Cost Savings
Estimated reduction in your annual water bill.
Payback Period
Months to recoup the smart controller investment.
Controller Cost
Estimated cost for a smart irrigation controller sized to your zones.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Lawn / Garden Area = 5000, Monthly Water Bill (Summer) = 80, Irrigation Months = 6, Current System Type = 1 = 4 input(s) provided
  2. Calculate Water Savings
    Water Savings
    25 = 25%
  3. Calculate Annual Water Saved
    Annual Water Saved
    4650 = 4650
  4. Calculate Annual Cost Savings
    Annual Cost Savings
    48 = $48

Engine last updated . Checked against 2 independently-derived tests — how we verify calculators.

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