Yard tools
Three free tools, no sign-up, nothing leaves your browser. All results are guidelines — check your product label and local conditions before you buy or spread anything.
Yard calculator: seed, fertiliser, water and mulch
Results appear here.
Assumptions used
- Grass seed: typically 35 g/m² for a new lawn, 17 g/m² for overseeding.
- Fertiliser: a common guideline is 5 g of nitrogen per m² per feed. The calculator converts that using the nitrogen % you enter.
- Water: typically 25 mm per week, which is 25 litres per m² per week, including rainfall.
- Mulch: volume = area × depth. Always follow the product label for any fertiliser or treatment.
Compost calculator: browns to greens
Enter rough weights or volumes in the same unit for both. The ratio is a guide, not a laboratory measurement.
Results appear here.
A common guideline is roughly 2–3 parts browns to 1 part greens by volume. See our compost guide for what counts as each.
Seasonal planting calendar
Pick your hemisphere and month for a short list of typical jobs. Adjust by 2–4 weeks for your local climate.
Choose a month to see typical jobs.