Lawn Fertilizer Calculator

Find how much fertilizer you need.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

This calculator works out how much fertilizer a lawn needs, converting your lawn's area and the product's nitrogen percentage into the actual pounds (or kilograms) of fertilizer to spread, based on a target application rate per 1,000 square feet.

Homeowners use it before every feeding to avoid over-application, which can burn grass and run off into waterways, or under-application, which wastes the trip and leaves the lawn under-fed. Lawn care companies use the same math when bagging product for a specific yard size.

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