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Lawn Care Tools & Calculators

Free calculators for every step of lawn care, from measuring your yard and tracking soil temperatures to building fertilizer schedules, mowing heights, watering plans, and seeding windows. Pick your grass type and get results tailored to your lawn.

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33 tools

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Showing 33 tools

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Lawn Size Calculator

Free lawn size calculator using satellite imagery. Enter your address, trace your yard on the map, and get exact square footage for fertilizer, seed, and sod amounts.

2 minutesTry it now
Planning

Soil Temperature Tracker

Monitor current soil temperatures and compare to 5-year and 10-year historical averages. Perfect for timing pre-emergent herbicides, overseeding, and fertilizer applications.

1 minuteTry it now
Seasonal Tasks

Is It Too Late To Seed?

Find out if it's too late to seed your lawn based on your location and grass type. Get personalized seeding windows and timing recommendations.

2 minutesTry it now
Seasonal TasksEmbeddable

Fertilizer Calculator

Calculate the right amount of fertilizer for your lawn size and grass type. Get NPK recommendations and application timing.

3 minutesTry it now
Seasonal Tasks

Overseeding Calculator

Find out how much grass seed to overseed and exactly when. Enter your ZIP, grass type, and lawn size for pounds of seed, bag counts, and your best overseeding window with a countdown.

2 minutesTry it now
Planning

Sod Calculator

Turn your lawn size into pallets, rolls, and pieces of sod with a 10% waste allowance. Estimate material and professional install cost by region, and see how sod compares to seeding.

2 minutesTry it now
Planning

Artificial Turf Cost Calculator

Estimate the cost to install artificial grass by area, turf grade, and region. Compare DIY vs professional install ranges for turf, base, infill, labor, and old-lawn removal. Ranges are estimates, so get local quotes.

2 minutesTry it now
Planning

Topsoil & Lawn Leveling Calculator

Turn your lawn size and depth into cubic yards of topsoil, sand, compost, or leveling mix. Get weight, bag counts, and an honest bulk-vs-bagged cost estimate for your region.

2 minutesTry it now
Seasonal Tasks

Grub Control Calculator

Find out when to apply grub control in your area, preventive vs curative, and how many bags to buy. Get your region's treatment windows by ZIP, plus a symptom check to confirm you actually have grubs.

2 minutesTry it now
Seasonal Tasks

Dethatching Calculator

Find out if your lawn actually needs dethatching, then get the right tool and your best window. Estimate your thatch layer and get a dethatch-or-wait verdict, power rake vs vertical mower guidance, and timing by ZIP and grass type.

2 minutesTry it now
Seasonal Tasks

Weed & Feed Calculator

Find out when to apply weed & feed in your area and exactly how much to buy. Get spring and fall timing by ZIP, bags or quarts needed, spreader settings, and grass-safety checks.

2 minutesTry it now
Ongoing Care

Watering Schedule Generator

Create a custom watering schedule based on your grass type, region, and current weather conditions.

2 minutesTry it now
Planning

Lawn Cost Estimator

Calculate your annual lawn care costs including fertilizer, treatments, maintenance, and equipment. Compare DIY vs professional pricing.

3 minutesTry it now
Ongoing Care

Mowing Height Calculator

Get the optimal mowing height and frequency recommendations for your specific grass type and season.

1 minuteTry it now
Seasonal Tasks

Aeration Timing Tool

Find the perfect time to aerate your lawn based on your location, grass type, and local climate conditions.

2 minutesTry it now
Seasonal Tasks

Herbicide Timing Calculator

Get precise timing recommendations for pre-emergent and post-emergent herbicide applications to control crabgrass and other weeds.

3 minutesTry it now
Seasonal Tasks

Tank Mix Calculator

Calculate exactly how much herbicide and surfactant to mix per gallon of water. Spot and blanket rates for Tenacity, quinclorac, 2,4-D, and more, with step-by-step mixing order.

1 minuteTry it now
Seasonal Tasks

Fertilizer Rate Calculator

Enter the N-P-K on any bag and your lawn size. Get pounds per 1,000 sq ft, total pounds for the lawn, how many bags to buy, and the actual nutrients delivered.

1 minuteTry it now
Seasonal Tasks

Fertilizer Schedule Calculator

Pick a product (Milorganite, Scotts Turf Builder, PGF, and more) and get the exact amount per application, bags to buy, and a year of application dates tuned to your ZIP and grass type.

2 minutesTry it now
Planning

Sprinkler Cost Calculator

Estimate what an in-ground sprinkler system costs for your lawn size and region, pro or DIY, with zone counts and a full component breakdown: heads, valves, controller, and labor.

1 minuteTry it now
Planning

Soil Test Analyzer

Upload your Logan Labs, Waypoint, or other soil test PDF and get an instant, grass-specific, plain-English analysis with lawn-size-adjusted product recommendations.

2 minutesTry it now
Planning

Lawn Lime Calculator

Enter your soil pH, grass type, and soil texture to get pounds of lime (or sulfur, if your pH is high) per 1,000 sq ft, the total for your lawn, bag counts, and how to split it safely.

2 minutesTry it now
Planning

Grass Comparison Tool

Compare grass types side-by-side to find the best match for your lawn. See detailed differences in maintenance, climate tolerance, and care requirements.

2 minutesTry it now
Product Calculators

Milorganite Calculator

Free Milorganite calculator. Enter your ZIP and lawn size for exactly how much Milorganite per application, how many bags, and your 4-application schedule tuned to your region.

1 minuteTry it now
Product Calculators

Scotts Turf Builder Calculator

Free Scotts Turf Builder Lawn Food calculator. Get the exact amount per application, bags needed, and a Scotts fertilizer schedule tuned to your ZIP and grass type.

1 minuteTry it now
Product Calculators

Scotts Weed and Feed Calculator

Free Scotts Weed & Feed calculator. Get how much to spread for your lawn size, how many bags, and when to apply for your ZIP, with the damp-grass and overseeding rules.

1 minuteTry it now
Product Calculators

Scotts Triple Action Calculator

Free Scotts Triple Action calculator. Get how much to spread, bags needed, and the strict spring pre-emergent timing for your ZIP, plus the no-seeding rule.

1 minuteTry it now
Product Calculators

Scotts Southern Lawn Food Calculator

Free Scotts Southern Lawn Food calculator. Get the amount per application, bags, and a warm-season feeding schedule tuned to your ZIP for Bermuda, Zoysia, St. Augustine, and Centipede.

1 minuteTry it now
Product Calculators

PGF Complete Calculator

Free PGF Complete 16-4-8 calculator. Get the amount per application, bags, and a season-long feeding schedule for your ZIP and grass type.

1 minuteTry it now
Product Calculators

Lesco 24-0-11 Calculator

Free Lesco 24-0-11 calculator. Get pounds per application, bags for your lawn size, and a feeding schedule tuned to your ZIP and grass type.

1 minuteTry it now
Product Calculators

Simple Lawn Solutions 16-4-8 Calculator

Free Simple Lawn Solutions 16-4-8 calculator. Get fluid ounces per application, bottles needed, and a liquid feeding schedule for your ZIP and grass.

1 minuteTry it now
Product Calculators

Ironite Calculator

Free Ironite calculator. Get how much Ironite to spread for your lawn size, bags needed, and when to apply for a deep green without pushing growth.

1 minuteTry it now
Product Calculators

Scotts Starter Fertilizer Calculator

Free Scotts Starter fertilizer calculator. Get how much starter food to spread for your new lawn size, bags needed, and how to time it around seeding.

1 minuteTry it now

Side-by-Side Comparison Guides

Frequently asked questions

Common questions about our lawn care tools

Which calculator should I use first?

Start with the Lawn Size Calculator. This measurement is essential for accurate results from other calculators.

Are these calculators accurate?

Our calculators use university extension guidelines. Results are estimates, so always follow product label instructions.

Do I need an account?

No! All tools are free without registration. An account lets you save your lawn profile for auto-fill.

Can I embed these calculators on my website?

Yes! Tools marked with the "Embeddable" badge can be added to your website for free. Click the "Embed" button on any embeddable calculator to get the code. No attribution required.

How often should I use these lawn care tools?

Use the Lawn Size Calculator once (unless you add new lawn areas). Seasonal tools like the Fertilizer and Seeding Calculators should be used 2-4 times per year based on your grass type.

What if I don't know my grass type?

Upload one clear lawn photo. In about 15 seconds, you'll get your grass type and personalized care recommendations.

Need help identifying your grass?

Upload one clear photo for your grass type and personalized recommendations in about 15 seconds.