How it works
Read the rate for your seed mix and whether you are starting a new lawn or overseeding. Enter grams per square meter or pounds per 1000 square feet; Yard Kit converts units without changing the underlying rate. The default is an example only. An extra allowance increases purchased seed; it is not an instruction to apply more seed than the label says.
Example
For a 100 m² lawn and an example rate of 25 g/m², the base need is 2.5 kg. With no extra allowance and 1 kg packages, buy 3 bags. At 5 lb per 1000 ft², a 1000 ft² lawn needs 5 lb before allowance. Species, site and application method affect the correct rate.
Assumptions and limitations
Prices, density, depth and seed rate are examples. Replace them with your measurements and supplier quote.
University of Illinois Extension
Frequently asked questions
Are my measurements uploaded?
No. The calculators run in your browser and save numeric settings locally. Plans are not synchronized across devices. Clearing site data removes the saved plan.
Why are bag and bulk quantities different?
Both start with the same volume including your allowance. Bags round up to complete packages, which can leave surplus. Bulk cost uses the unrounded volume; suppliers may impose separate minimum orders or delivery increments.
Does switching units change my project?
No. Physical values are stored in meters, cubic meters and kilograms. Switching to feet, inches and pounds converts the displayed values and price unit. Switching currency does not convert prices.