Grass Seed Calculator
Estimate grass seed quantity from lawn area and application rate.
Open calculator →Projectlyst / Lawn & Outdoor
Lawn & Outdoor Calculators
Estimate common lawn and landscape materials with free calculators for grass seed, gravel driveways, landscape rock, and mulch. Start with the area, depth, or application rate that matches your project.
Gravel Driveway Calculator
Estimate cubic yards and tons of gravel for driveway layers.
Open calculator →Landscape Rock Calculator
Estimate landscape rock volume and weight from area and depth.
Open calculator →Mulch Calculator
Estimate how much mulch you need from area and depth.
Open calculator →Choose the right lawn or landscape calculator
Use the grass seed calculator for seeding or overseeding areas. Use the gravel driveway calculator when depth and material weight matter for a driveway layer. For beds and landscape areas, choose the landscape rock calculator for stone or the mulch calculator for organic ground cover.
Coverage and depth drive outdoor quantities
Outdoor material estimates usually depend on measured area plus either application rate or installed depth. Small changes in depth across a large area can materially change the amount required, so measure the site carefully and account for compaction, settling, and product-specific coverage where relevant.
Planning guidance only. Verify site measurements, product coverage, material density, compaction needs, and local conditions before ordering.