# Dirt Calculator – Calculate Soil Required in Kg

## Created by Team y2calculate

Content written by Noman  (Civil engineer)

Coding and design by Marcelino (Ms computer science)

Reviewed by Wahid and Anneliese

Fact checked 🔍✓

Published: November 23, 2023 → Last Updated: January 21, 2024

Gardening and landscaping projects often require precise calculations to determine the amount of soil needed. Whether you’re planning a new garden bed or embarking on a landscaping project, having an accurate estimate of the required soil volume and weight is crucial. The Dirt Calculator presented here offers a user-friendly solution to simplify these calculations.

## Soil required per unit volume

The weight of 1 cubic meter of soil can vary depending on the type of soil and its moisture content. However, as a general estimate, 1 cubic meter of moderately damp soil weighs approximately 1,300 to 1,700 kilograms (kg).

Here is a table of the approximate weight of 1 cubic meter of different types of soil:

Soil TypeApproximate Weight (kg/m³)
Sandy soil1,200 – 1,400
Loam soil1,300 – 1,500
Clay soil1,500 – 1,700

## Calculation Methodology

The Dirt Calculator employs a straightforward yet comprehensive approach to determine the amount of soil needed for your gardening or landscaping project. The calculations involve three primary steps:

## Volume Calculation:

The volume of soil required is calculated by multiplying the width, length, and depth of the specified area.

Formula:

$V = \text{{Width}} \times \text{{Length}} \times \text{{Depth}}$

## Soil Weight Calculation:

The weight of the soil is estimated based on the selected soil type, considering a range for each soil type.

Formula:

$W = V \times \left( \frac{{\text{{Min Soil Weight}} + \text{{Max Soil Weight}}}}{2} \right)$

## Bag Estimation:

The total weight is translated into the number of 5kg bags required for practicality.

Formula:

$\text{{Bags Required}} = \lceil \frac{W}{5} \rceil$

## Copy and paste the below code into HTML editor on article or website

				
<!--
Users are not allowed to edit any part of the calculator except the CSS.
They are only allowed to edit the CSS to achieve their desired style.
-->

<!DOCTYPE html>
<html lang="en">

<style>
/* CSS styling */
.calculator {
background-color: #f5f5f5;
max-width: 400px;
margin: 0 auto;
font-family: Arial, sans-serif;
}

.calculator h1 {
color: #4CAF50;
text-align: center;
}

.calculator label {
display: flex;
justify-content: space-between;
align-items: center;
margin-top: 10px;
}

.calculator input[type="number"],
.calculator select {
width: calc(50% - 5px);
font-size: 14px;
margin-bottom: 10px;
border: 1px solid #ccc;
}

.calculator .calculate-btn {
background-color: #4CAF50;
color: #ffffff;
border: none;
font-size: 16px;
cursor: pointer;
width: 100%;
}

/* Adjusted style for the result class */
.calculator .result {
text-align: center;
margin-top: 1px;
margin-bottom: 1px;
font-size: 13.5px; /* Adjusted font size */
color: #333333;
font-weight: bold;
font-family: 'Roboto', sans-serif; /* Added font family */
}

.terms-of-use {
font-size: 12px;
color: #777;
margin-top: 10px;
}

.powered-by {
font-size: 12px;
color: #777;
margin-top: 10px;
}
</style>

<body>

<div class="calculator">
<h1>Dirt Calculator</h1>

<label for="width">Width:
<input type="number" id="width" placeholder="Enter the width" required>
<select id="widthUnit">
<option value="m">meters</option>
<option value="cm">centimeters</option>
<option value="ft">feet</option>
<option value="inches">inches</option>
<option value="mm">millimeters</option>
</select>
</label>

<label for="length">Length:
<input type="number" id="length" placeholder="Enter the length" required>
<select id="lengthUnit">
<option value="m">meters</option>
<option value="cm">centimeters</option>
<option value="ft">feet</option>
<option value="inches">inches</option>
<option value="mm">millimeters</option>
</select>
</label>

<label for="depth">Depth:
<input type="number" id="depth" placeholder="Enter the depth" required>
<select id="depthUnit">
<option value="m">meters</option>
<option value="cm">centimeters</option>
<option value="ft">feet</option>
<option value="inches">inches</option>
<option value="mm">millimeters</option>
</select>
</label>

<label for="soilType">Soil Type:
<select id="soilType">
<option value="sandy">Sandy soil</option>
<option value="loam">Loam soil</option>
<option value="clay">Clay soil</option>
</select>
</label>

<button class="calculate-btn" onclick="calculateDirt()">Calculate Dirt</button>
<div class="result" id="result"></div>
<div class="result" id="totalWeight"></div>
<div class="result" id="bagsRequired"></div>

<div class="powered-by">
</div>
</div>

<script>
function calculateDirt() {
var width = parseFloat(document.getElementById("width").value);
var widthUnit = document.getElementById("widthUnit").value;
var length = parseFloat(document.getElementById("length").value);
var lengthUnit = document.getElementById("lengthUnit").value;
var depth = parseFloat(document.getElementById("depth").value);
var depthUnit = document.getElementById("depthUnit").value;
var soilType = document.getElementById("soilType").value;

// Convert dimensions to meters
width = convertToMeters(width, widthUnit);
length = convertToMeters(length, lengthUnit);
depth = convertToMeters(depth, depthUnit);

// Calculate volume of dirt
var volume = width * length * depth;

// Calculate total weight of soil based on soil type (kg/m³)
var soilWeightRange = getSoilWeightRange(soilType);
var totalWeight = volume * ((soilWeightRange.min + soilWeightRange.max) / 2); // Assuming the average of the range

// Calculate number of 5kg bags required
var bagsRequired = Math.ceil(totalWeight / 5);

// Display the calculated volume, total weight, and bags required
document.getElementById("result").innerHTML = "You will need " + volume.toFixed(2) + " cubic meters of dirt.";
document.getElementById("totalWeight").innerHTML = "Total weight of soil: " + totalWeight.toFixed(2) + " kg.";
document.getElementById("bagsRequired").innerHTML = "Number of 5kg bags required: " + bagsRequired;
}

function convertToMeters(value, unit) {
if (unit === 'cm') {
return value * 0.01; // 1 centimeter = 0.01 meters
} else if (unit === 'ft') {
return value * 0.3048; // 1 foot = 0.3048 meters
} else if (unit === 'inches') {
return value * 0.0254; // 1 inch = 0.0254 meters
} else if (unit === 'mm') {
return value * 0.001; // 1 millimeter = 0.001 meters
} else {
return value; // Already in meters or unknown unit
}
}

function getSoilWeightRange(soilType) {
// Return weight range based on soil type (kg/m³)
switch (soilType) {
case 'sandy':
return { min: 1200, max: 1400 };
case 'loam':
return { min: 1300, max: 1500 };
case 'clay':
return { min: 1500, max: 1700 };
default:
return { min: 0, max: 0 }; // Default to 0 if unknown soil type
}
}
</script>
</body>

</html>