Calculate how much grass seed you need for a new lawn or overseeding, based on area and recommended rate per square meter.
The calculator multiplies the area by the recommended amount of grass seed per square meter:
To sow a brand-new 60 m² lawn at 25 g/m², you need 60 × 25 = 1,500 g, i.e. 1.5 kg of grass seed.
Spring and early fall are generally the best times to sow, when soil temperatures are favorable and competition from weeds is lower. Exact timing depends on your local climate.
No, the opposite — overseeding an existing lawn normally needs less seed per square meter than a brand-new lawn, since you're filling in an already established grass cover.