Fertilizer Cost Calculator
Understanding Fertilizer Costs
Fertilizing your lawn or garden is crucial for healthy growth and vibrant appearance. However, understanding the cost involved can sometimes be a bit tricky, especially when dealing with different bag sizes, coverage areas, and prices. This calculator simplifies the process by helping you estimate the total cost of fertilizer needed for your specific project.
To use the calculator, you'll need three key pieces of information:
- Total Area to Fertilize: This is the square footage of the lawn or garden area you intend to treat. Measure your area carefully for the most accurate results.
- Coverage per Fertilizer Bag: This information is typically found on the fertilizer packaging. It tells you how many square feet a single bag is designed to cover.
- Cost per Fertilizer Bag: This is the retail price of one bag of fertilizer.
The calculator will then determine the number of bags you'll need and the total estimated cost. For example, if you have a 5,000 sq ft lawn and your fertilizer bag covers 5,000 sq ft and costs $45.99, you'll need just one bag, costing you $45.99. If your lawn is 10,000 sq ft and each bag covers 5,000 sq ft, you'd need two bags. If the bags cost $30 each, your total would be $60. Remember to always check the specific recommendations on your fertilizer product for best results and to avoid over- or under-fertilizing.
function calculateFertilizerCost() {
var areaSize = parseFloat(document.getElementById("areaSize").value);
var coveragePerBag = parseFloat(document.getElementById("coveragePerBag").value);
var bagCost = parseFloat(document.getElementById("bagCost").value);
var resultDiv = document.getElementById("result");
if (isNaN(areaSize) || isNaN(coveragePerBag) || isNaN(bagCost) || areaSize <= 0 || coveragePerBag <= 0 || bagCost < 0) {
resultDiv.innerHTML = "Please enter valid positive numbers for all fields.";
return;
}
var numberOfBagsNeeded = Math.ceil(areaSize / coveragePerBag);
var totalCost = numberOfBagsNeeded * bagCost;
resultDiv.innerHTML =
"
Estimated Fertilizer Cost
" +
"Number of Bags Needed: " + numberOfBagsNeeded + "" +
"Total Estimated Cost: $" + totalCost.toFixed(2) + "";
}
.calculator-container {
font-family: sans-serif;
border: 1px solid #ccc;
padding: 20px;
border-radius: 8px;
max-width: 700px;
margin: 20px auto;
background-color: #f9f9f9;
}
.calculator-container h2 {
text-align: center;
color: #333;
margin-bottom: 20px;
}
.calculator-inputs {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 15px;
margin-bottom: 20px;
}
.input-group {
display: flex;
flex-direction: column;
}
.input-group label {
margin-bottom: 5px;
font-weight: bold;
color: #555;
}
.input-group input[type="number"] {
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 16px;
}
.calculator-inputs button {
grid-column: 1 / -1; /* Span across both columns */
padding: 12px 20px;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
font-size: 18px;
transition: background-color 0.3s ease;
}
.calculator-inputs button:hover {
background-color: #45a049;
}
.calculator-result {
background-color: #e7f3e7;
border: 1px solid #4CAF50;
padding: 15px;
border-radius: 4px;
margin-top: 20px;
text-align: center;
}
.calculator-result h2 {
color: #2e7d32;
margin-top: 0;
margin-bottom: 10px;
}
.calculator-result p {
font-size: 1.1em;
color: #333;
margin: 5px 0;
}
.calculator-explanation {
margin-top: 30px;
padding-top: 20px;
border-top: 1px dashed #ccc;
color: #666;
font-size: 0.95em;
line-height: 1.6;
}
.calculator-explanation h3 {
color: #444;
margin-bottom: 10px;
}
.calculator-explanation ul {
margin-left: 20px;
margin-bottom: 15px;
}
.calculator-explanation li {
margin-bottom: 5px;
}
/* Responsive adjustments */
@media (max-width: 600px) {
.calculator-inputs {
grid-template-columns: 1fr;
}
.calculator-inputs button {
grid-column: 1 / -1;
}
}