Garden & outdoors

Lawn seed quantity calculator

Estimate seed from area and the application rate on your pack.

Lawn seed quantity calculator
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A clear answer. Here’s how.

Seed grams = area × your supplied pack rate. Adds the chosen allowance, converts to kilograms and rounds up to whole packs. The default is an example, not a recommended seeding rate; follow the product label.

See a worked example

Worked example

A fixed demonstration, separate from the values you enter above.

Lawn area (m²)
50
Pack application rate (g/m²)
35
Extra allowance (%)
5
Pack weight (kg)
1

Example result

Seed including allowance
1.8375 kg
Whole packs
2