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Lawn Fertilizer Calculator

0lbs of fertilizer
0lbs nitrogen total
0lbs product per 1000

Apply the correct amount of fertilizer to your lawn by working from the nitrogen number on the bag instead of guessing. Enter your lawn area in square feet, the target nitrogen rate in pounds per thousand square feet, and the first number of the fertilizer analysis, which is the nitrogen percentage. A common target is one pound of nitrogen per thousand square feet per feeding, and most turf products list an analysis like twenty four zero six where twenty four is the nitrogen percent. The calculator divides the target nitrogen by that percentage to find how many pounds of product to spread across your whole lawn, so you neither burn the grass nor underfeed it. It also shows the total nitrogen applied. Everything is computed instantly in your browser without sending your lawn details anywhere.

How to use Lawn Fertilizer Calculator

  1. Enter your lawn size.
  2. Enter the target nitrogen rate and the bag N number.
  3. Read the pounds of fertilizer to apply.

Frequently asked questions

How is fertilizer amount calculated?

It finds the pounds of product to apply from your lawn size, the target nitrogen rate, and the nitrogen percentage on the bag.

What does the bag N number mean?

The first number in the N-P-K label is the nitrogen percentage. A higher N number means less product delivers the same nitrogen.

What is a common nitrogen rate?

A frequent target is about 1 pound of nitrogen per 1000 square feet per application, though this depends on your grass and season.

What is Lawn Fertilizer Calculator?

Apply the correct amount of fertilizer to your lawn by working from the nitrogen number on the bag instead of guessing. Enter your lawn area in square feet, the target nitrogen rate in pounds per thousand square feet, and the first number of the fertilizer analysis, which is the nitrogen percentage.

Is Lawn Fertilizer Calculator free to use?

Yes. Lawn Fertilizer Calculator is completely free, with no sign-up and no usage limits.

Does Lawn Fertilizer Calculator work in a web browser?

Yes. Lawn Fertilizer Calculator runs in any modern web browser. There is nothing to download or install.

Is my data private with Lawn Fertilizer Calculator?

Yes. Lawn Fertilizer Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.