Calculate Tree Weight

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Tree Weight Calculator

Estimate the total weight of a standing tree based on species, diameter, and height.

Oak (White/Red) Birch Maple (Sugar/Hard) Pine (White) Pine (Yellow/Loblolly) Cedar (Western Red) Ash Hickory Walnut Beech
Estimated Total Weight: 0 lbs
Estimated Total Weight: 0 tons

*Calculation includes trunk volume and an estimated 20% addition for branches/crown weight.

How to Calculate Tree Weight

Calculating the weight of a tree is essential for arborists, loggers, and homeowners planning tree removal. Knowing the weight helps in determining the size of the crane needed, the capacity of the hauling truck, and the potential cost of disposal.

The calculation is based on the volume of the trunk plus the weight of the crown (branches and leaves). Since trees are not perfect cylinders, we use a "form factor" to account for the natural taper of the tree as it gets taller.

The Formula Used

Our calculator uses the following mathematical steps:

  • Trunk Volume: Calculated using the formula V = 0.7854 * D² * H * k, where D is diameter in feet, H is height in feet, and k is the form factor (typically 0.54 for most species).
  • Green Weight: The volume is multiplied by the average green density of the chosen species (lbs per cubic foot).
  • Crown Factor: We add approximately 20% to the total to account for the weight of branches and foliage.

Common Wood Densities (Green)

Wood Species Lbs per Cubic Foot
Hickory 64 lbs/ft³
White Oak 62 lbs/ft³
Sugar Maple 50 lbs/ft³
White Pine 35 lbs/ft³

Measurement Tips

Measuring Diameter (DBH): DBH stands for "Diameter at Breast Height." This is measured 4.5 feet above the ground. If you don't have a diameter tape, measure the circumference of the tree with a standard tape measure and divide that number by 3.14 (Pi).

Estimating Height: For the most accurate result, estimate the height to the very top of the crown, not just where the trunk begins to branch out.

function calculateTreeWeight() { var diameterInches = document.getElementById("trunkDiameter").value; var heightFeet = document.getElementById("treeHeight").value; var density = document.getElementById("speciesDensity").value; var resultArea = document.getElementById("tree-result-area"); if (diameterInches > 0 && heightFeet > 0) { // 1. Convert diameter inches to feet var diameterFeet = diameterInches / 12; // 2. Calculate Cross Sectional Area (A = PI * r^2) // Area = 0.7854 * D^2 var area = 0.7854 * Math.pow(diameterFeet, 2); // 3. Calculate Volume with Form Factor (0.54 for average tree taper) var volume = area * heightFeet * 0.54; // 4. Calculate Trunk Weight var trunkWeight = volume * density; // 5. Add 20% for the crown/branches var totalWeightLbs = trunkWeight * 1.20; // 6. Convert to tons var totalTons = totalWeightLbs / 2000; // Display results document.getElementById("lbsResult").innerText = Math.round(totalWeightLbs).toLocaleString(); document.getElementById("tonsResult").innerText = totalTons.toFixed(2); resultArea.style.display = "block"; } else { alert("Please enter valid positive numbers for diameter and height."); } }

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