Fertilizer Calculator
Pounds = (sq ft ÷ 1000) × rate per 1000 sq ft from bag directions.
Step 1: Units
Step 2
Enter project measurements
Use decimals if needed (e.g. 3.5).
Step 3
How to use this calculator
Use soil test recommendations when available.
What the math is doing
Weight scales linearly with area and rate.
Frequently asked questions
Slow release?
Same area math; frequency differs.
Liquid?
Use manufacturer conversion.
Buffer water?
Protect impervious surfaces.
Pets?
Observe re-entry intervals.