Grass Seed Calculator
Estimate how much grass seed a lawn needs from its area and the recommended seeding rate. Enter lawn area and seed rate to see seed needed when you…
8 of 8 free uses remaining today
Estimate how much grass seed a lawn needs from its area and the recommended seeding rate. Enter lawn area and seed rate to see seed needed when you calculate.
Worked example
Example calculated from the starting values. Enter your own values and press Calculate to get your result.
With the default inputs (lawn area = 120 m², seed rate = 35 g/m²), the results are: seed needed 4.20 kg.
Quick reference: lawn area vs result
Reference table based on the example values; it is not your calculation result.
| Lawn area (m²) | Seed needed |
|---|---|
| 60 | 2.10 kg |
| 120 | 4.20 kg |
| 240 | 8.40 kg |
| 600 | 21.00 kg |
| 1,200 | 42.00 kg |
| 2,400 | 84.00 kg |
Frequently asked questions
What formula does this calculator use?
Seed needed = a × rate ÷ 1000. Variables: a = lawn area in m², rate = seed rate in g/m².
What do I need to enter?
You need lawn area (m²), seed rate (g/m²). Results update as you type.
What is an example result?
With the default inputs (lawn area = 120 m², seed rate = 35 g/m²), the results are: seed needed 4.20 kg.
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