🪵 Firewood Cord Calculator
Calculate the number of cords, face cords, cubic volume, and cost for your firewood stack. Supports rectangular and cylindrical stacks, with a winter heating demand estimator and BTU comparison chart.
📐 Firewood Stack Volume
Results
❓ Frequently Asked Questions
How much is 1 cord of firewood?
1 cord is 128 cubic feet of tightly stacked firewood, typically measuring 4 feet high × 4 feet deep × 8 feet long. This is the legal standard for firewood measurement in the United States and Canada.
What is the difference between a face cord and a full cord?
A full cord equals 4 ft × 4 ft × 8 ft = 128 cubic feet. A face cord is 4 ft high × 8 ft long × 16 inches deep, approximately 42.7 cubic feet. One full cord equals about 3 face cords when firewood length is 16 inches.
How many cords of firewood do I need for winter?
It depends on insulation and climate. Cold regions (like the US Northeast) typically need 3-5 cords per season for primary heating; milder areas need 1-2 cords. For supplemental heating, 1-2 cords is usually sufficient. Use the Winter Demand tab above for a quick estimate.
How do I calculate the volume of my firewood stack?
Measure the length, height, and depth of your firewood stack (in feet), multiply them together to get cubic feet, then divide by 128 to get the number of cords. This calculator does the math automatically and adjusts for stacking tightness.
How long should firewood dry before burning?
Hardwoods should be seasoned for at least 6-12 months (ideally 12-24 months), softwoods for about 6 months. Properly seasoned firewood should have a moisture content below 20% for efficient burning and less smoke. Freshly cut wood can have 50%+ moisture, significantly reducing heat output.