Home & Life · Free tool
Lawn Fertilizer Calculator
Pounds of fertilizer for any lawn — based on sqft, nitrogen target, and bag N percentage.
Updated April 2026
Product to apply
20.8 lbs
≈ 0.6 bag(s) at 40 lb each
Inputs used
Lawn: 5,000 sqft → 5.00 thousand-sqft units
Target: 1 lb N × 5.00 = 5.00 lb N total
Product: 5.00 ÷ 24% = 20.8 lb fertilizer
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What it does
Apply the right nitrogen without over- or under-feeding.
Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.
How to use it
- Enter lawn sqft.
- Set N target and bag %.
- Read pounds needed.
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