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Firewood Cord Calculator

Measure your stack to determine how many cords of wood you have.

Note: A full cord is 4ft wide. A face cord is usually 1.33ft (16 inches).

Results:

function calculateFirewood() { var length = parseFloat(document.getElementById('stackLength').value); var height = parseFloat(document.getElementById('stackHeight').value); var width = parseFloat(document.getElementById('stackWidth').value); var resultDiv = document.getElementById('firewoodResult'); if (isNaN(length) || isNaN(height) || isNaN(width) || length <= 0 || height <= 0 || width <= 0) { alert("Please enter valid positive numbers for all dimensions."); return; } var cubicFeet = length * height * width; var cords = cubicFeet / 128; document.getElementById('totalCords').innerHTML = "Total Cords: " + cords.toFixed(2) + ""; document.getElementById('totalCubicFeet').innerHTML = "Total Volume: " + cubicFeet.toFixed(2) + " cubic feet"; var explanation = ""; if (cords >= 1) { explanation = "You have " + cords.toFixed(2) + " full cord(s). A standard full cord is exactly 128 cubic feet (usually 4'x4'x8′)."; } else { var percentage = (cords * 100).toFixed(0); explanation = "You have approximately " + percentage + "% of a full cord."; } document.getElementById('explanationText').innerText = explanation; resultDiv.style.display = "block"; }

How to Use the Firewood Cord Calculator

Buying or selling firewood can be confusing due to different regional terms and stacking methods. Our calculator uses the industry standard mathematical formula to help you determine exactly how much wood you have. To get an accurate measurement, stack your wood tightly and neatly before measuring.

The Math Behind Firewood Measurement

The standard unit of measurement for firewood is the Cord. By definition, a cord of wood is a neatly stacked pile that measures 128 cubic feet. The calculation used by our tool is:

(Length x Height x Width) / 128 = Total Cords

Full Cord vs. Face Cord: What's the Difference?

This is where most homeowners get confused. It is vital to know which one you are paying for:

• Full Cord: A stack measuring 4 feet high, 8 feet long, and 4 feet deep (128 cubic feet).
• Face Cord: A stack measuring 4 feet high and 8 feet long, but the width is only as deep as a single log (usually 16 inches or 1.33 feet). A face cord is typically 1/3 of a full cord.
• Rick of Wood: This is a regional term often used interchangeably with "Face Cord," though it can vary by supplier.

Realistic Example Calculation

Imagine you have a stack of wood against your fence that is 12 feet long and 4 feet high. The logs are cut to 16 inches (1.33 feet) long.

1. Step 1: Multiply 12 (length) x 4 (height) x 1.33 (width) = 63.84 cubic feet.
2. Step 2: Divide 63.84 by 128.
3. Result: 0.49 Cords (roughly half a full cord, or 1.5 face cords).

Pro-Tips for Accurate Measurement

For the most accurate result from the firewood cord calculator, follow these stacking rules:

• Stack it tight: Large gaps between logs will result in a lower "actual" wood volume, meaning you are paying for air.
• Level the top: Try to keep the height consistent across the entire length of the stack.
• Measure the logs: If your log lengths vary, take an average measurement for the "Width" field in the calculator.
• Account for "Tossed" Wood: A loose pile of wood (not stacked) takes up about 180 cubic feet to equal one 128-cubic-foot cord because of the air pockets.