5,000 sq ft lawn, 5,000 sq ft coverage, $45 bag
- Bags = 1
- Cost = $45
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Lawn Fertilizer Coverage Calculator
Find how many fertilizer bags you need and material cost based on lawn size and bag coverage.
Results
- Bags needed
- 1.00
- Material cost
- $45
How to use this calculator
- Enter lawn size in square feet.
- Enter bag coverage and cost.
- See bags needed and total cost.
Inputs explained
- Lawn size
- Total area to fertilize.
- Bag coverage
- Coverage per bag at the recommended application rate.
- Bag cost
- Price per bag.
How it works
Bags needed = lawn square footage ÷ bag coverage.
Material cost = bags × bag cost.
Formula
Bags = Lawn size ÷ Coverage Cost = Bags × Bag cost
When to use it
- Planning a fertilizer purchase without overbuying.
- Budgeting seasonal lawn treatments.
- Comparing different bag sizes/prices for best value.
Tips & cautions
- Round up bag count to avoid running short.
- Adjust coverage if applying heavier/lighter than the label rate.
- For multiple applications per season, multiply results by number of applications.
- Assumes single application at label rate.
- Does not handle variable rates for different lawn areas; split and sum if needed.
Worked examples
7,500 sq ft lawn, 4,000 sq ft coverage, $38 bag
- Bags ≈ 1.88 (round up to 2)
- Cost ≈ $71.44
Deep dive
This lawn fertilizer coverage calculator divides your lawn size by bag coverage to show bags needed and total cost.
Use it to buy the right amount of fertilizer for your yard without guessing.
FAQs
- Heavier application?
- Reduce coverage to reflect heavier rate and rerun.
- Multiple apps per year?
- Multiply bags/cost by number of applications.
- Different bag sizes?
- Adjust coverage and cost for each product you’re comparing.
- Liquid fertilizers?
- This is for bagged granular; liquids differ.
- Round up or down?
- Round up to avoid running short.
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Estimate only. Follow product label directions and adjust for your lawn’s needs. Always round up to ensure full coverage.