About Lawn Size Calculator

Calculate total lawn area by combining multiple geometric shapes—rectangles, circles, triangles, or irregular regions—then get maintenance estimates tailored to your grass type and climate zone. The calculator converts between square feet, square meters, and acres, and produces annual cost projections for water, fertilizer, seed, and equipment based on per-1,000-sq-ft rates adjusted by grass and climate multipliers.

• Supports rectangle, circle (πr²), triangle (½BH), and manual irregular area entry
• Three grass types: cool-season (fescue/bluegrass), warm-season (bermuda/zoysia), drought-resistant (buffalo/native)
• Four climate zones (arid, temperate, humid, tropical) with separate water and fertilizer multipliers
• Calculates weekly mowing frequency, watering gallons, fertilizer weight, seed needs, and maintenance hours
• Annual cost breakdown covers water (at your $/gallon rate), fertilizer, seed, and equipment wear
• Export full analysis as JSON for landscaping planning

Frequently Asked Questions

How accurate are the maintenance cost estimates?

They’re ballpark figures based on national averages per 1,000 sq ft, adjusted by grass-type and climate multipliers. Actual costs vary by region, soil condition, and local water rates. Plug in your real $/gallon water cost for the most useful output.

How do I measure an irregularly shaped lawn?

Break the lawn into simple shapes (rectangles, triangles, circles), measure each section, and add the areas together. The calculator handles rectangular and circular inputs directly. For complex shapes, use the closest geometric approximation and add a 5-10% buffer.