Lawn Tools
Stop guessing. Calculate it.
Precision tools to dial in your watering schedule and fertilizer rates. Enter your numbers, get your plan.
Watering Calculator
How long should you run your sprinklers?
Goal: Deliver 0.5 inches per session, 2× per week (1 inch total). This trains roots to grow deep.
Fertilizer Calculator
How many pounds of fertilizer do you need?
Goal: Apply 1 lb of actual nitrogen per 1,000 sq ft per application. Do not exceed this without a soil test.
How to use these tools
💧 Watering Calculator
- 1. Measure your lawn square footage
- 2. Do the tuna can test to find your sprinkler's output rate
- 3. Enter both values to get your session time
- 4. Run that duration, twice per week, early morning
Tuna can test:
Place empty cans in your lawn, run sprinklers for 15 min, measure depth collected. Multiply by 4 for inches/hour.
🌱 Fertilizer Calculator
- 1. Measure your lawn square footage
- 2. Check the bag for the N-P-K ratio (first number is nitrogen %)
- 3. Select your fertilizer and target rate
- 4. Get the exact pounds needed and calibrate your spreader
Reading the bag:
A 32-0-8 fertilizer is 32% nitrogen. A 50 lb bag contains 16 lbs of actual nitrogen.
More tools coming
Sign up to get notifiedOverseeding Rate Calculator
Calculate how much seed you need based on lawn size and seed type.
Soil Amendment Guide
Tell us your soil test results and get a custom amendment plan.
Lawn Calendar
A week-by-week schedule of every task for your cool-season lawn.
Put the numbers to work
Get your weekly lawn play
Every week, one focused play for your cool-season lawn. No fluff—just the steps that matter this week.
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