Lawn Calculator

Calculate the amount of seed, fertilizer, and soil needed for establishing or repairing a lawn.

✅ Free 📅 Updated 5.11.2026 🏠 Construction Calculator

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About this calculator

What is the Lawn Calculator?

The Lawn Calculator tells you how much seed, fertilizer, and soil you need for establishing or repairing a lawn. The calculator uses standard doses and your area.

The calculator is free, works in your browser without registration, and shows the result as soon as you change the values. The calculations are done on your device, and the information you enter is not sent anywhere.

Formula and Calculation Principle

Seed amount = area × dose (new lawn 30 g/m², overseeding 15 g/m², patching 20 g/m²). Starter fertilizer about 30 g/m². Soil amount = area × layer thickness.

Practical Example

200 m² of new lawn requires about 6 kg of seed, 6 kg of fertilizer, and 10 m³ of soil with a 5 cm layer. With default settings, the calculator gives the result: 6.0 kg of seed is needed.

Who is the calculator suitable for?

Homeowners and cottage dwellers who are establishing a new lawn or repairing an old one and want to buy the right amount of supplies.

Tips and Notes

  • Level the ground and lightly tamp it before sowing.
  • Water the sowing daily until the seedlings have emerged.
  • Buy a little extra seed, 5–10%.


Frequently Asked Questions