This calculator helps you estimate the amount of gravel, in tons, needed for your project. Whether you're building a driveway, a pathway, or a landscaping feature, knowing the correct tonnage is crucial for efficient ordering and to avoid over or under-buying.
function calculateGravelTonnage() {
var length = parseFloat(document.getElementById("length").value);
var width = parseFloat(document.getElementById("width").value);
var depthInches = parseFloat(document.getElementById("depth").value);
var density = parseFloat(document.getElementById("density").value);
var resultDiv = document.getElementById("result");
resultDiv.innerHTML = ""; // Clear previous results
// Input validation
if (isNaN(length) || length <= 0 ||
isNaN(width) || width <= 0 ||
isNaN(depthInches) || depthInches <= 0 ||
isNaN(density) || density <= 0) {
resultDiv.innerHTML = "Please enter valid positive numbers for all fields.";
return;
}
// Convert depth from inches to feet
var depthFeet = depthInches / 12;
// Calculate volume in cubic feet
var volumeCubicFeet = length * width * depthFeet;
// Calculate weight in pounds
var weightLbs = volumeCubicFeet * density;
// Convert weight from pounds to tons (1 ton = 2000 lbs)
var weightTons = weightLbs / 2000;
resultDiv.innerHTML = "