How much seed do I need?
The Boston Seeds Grass Seed Calculator makes it easy to find out exactly how much grass seed is needed to grow a lawn from scratch. Simply enter the dimensions of the area you want to cover with grass seed and our tool will do the work for you. Suitable for use on square, circular, and triangular shaped lawns (or a combination of the two)!
Or if you prefer you can use our grids below to work it out for yourself:
Area - Seed Requirement (kg)
| Sowing Rate (g per sq/m) |
50m² | 100m² | 150m² | 200m² | 300m² | 400m² | 500m² | 750m² | 1000m² | 500m² | 2000m² |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 0.25 | 0.50 | 0.75 | 1.00 | 1.50 | 2.00 | 2.50 | 3.75 | 5.00 | 7.50 | 10.00 |
| 10 | 0.50 | 1.00 | 1.50 | 2.00 | 3.00 | 4.00 | 5.00 | 7.50 | 10.00 | 15.00 | 20.00 |
| 15 | 0.75 | 1.50 | 2.25 | 3.00 | 4.50 | 6.00 | 7.50 | 11.25 | 15.00 | 22.50 | 30.00 |
| 25 | 1.25 | 2.50 | 3.75 | 5.00 | 7.50 | 10.00 | 12.50 | 18.75 | 25.00 | 37.50 | 50.00 |
| 35 | 1.75 | 3.50 | 5.25 | 7.00 | 10.50 | 14.00 | 17.50 | 26.25 | 35.00 | 52.50 | 70.00 |
| 50 | 2.50 | 5.00 | 7.50 | 10.00 | 15.00 | 25.00 | 25.00 | 37.50 | 50.00 | 75.00 | 100.00 |
Quantity - Seed Quantity Coverage (m²)
| Sowing Rate (g per sq/m) |
1kg | 5kg | 10kg | 15kg | 20kg | 30kg | 40kg | 50kg | 75kg | 100kg | 200kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 200 | 1000 | 2000 | 3000 | 4000 | 6000 | 8000 | 10000 | 15000 | 20000 | 40000 |
| 10 | 100 | 500 | 1000 | 1500 | 2000 | 3000 | 4000 | 5000 | 7500 | 10000 | 20000 |
| 15 | 67 | 335 | 665 | 1000 | 1335 | 2000 | 2665 | 3335 | 5000 | 6665 | 13335 |
| 25 | 40 | 200 | 400 | 600 | 800 | 1200 | 1600 | 2000 | 3000 | 4000 | 8000 |
| 35 | 30 | 140 | 285 | 430 | 570 | 855 | 1140 | 1430 | 2140 | 2855 | 5715 |
| 50 | 20 | 100 | 200 | 300 | 400 | 600 | 800 | 1000 | 1500 | 2000 | 4000 |
