Lawn fertilizer bag and rate calculator
Turn the numbers on a fertilizer bag into pounds of product for your lawn. Enter the N-P-K on the bag and the pounds of nitrogen you want per 1,000 square feet.
Quantity estimate for granular lawn fertilizer only. The product label, your state and local fertilizer rules and soil test results take precedence.
Free, no sign-up. Nothing you type leaves this page.
Where the numbers come from.
Does this cover weed killer or liquid products?
No. It is for granular lawn fertilizer only. Herbicide and insecticide rates and tank mixes are left out because the product label is the rule for those.
What does the warning mean?
It appears when one application puts down more nitrogen than the limit you set. The limit starts at 1 pound of nitrogen per 1,000 square feet, which is about what Minnesota Extension suggests. Some states allow less, so you can change it.
Put the numbers on an estimate.
Simpli Trades Pro has calculators like this one built in, so the quantities go straight onto an estimate for your customer. Start your free trial — no credit card required.