Start with the rule of thumb: how many cords of firewood for a winter of heating
If wood is your primary heat source, plan on 2 to 3 full cords per 1,000 square feet in a cold climate, and 1 to 2 cords per 1,000 square feet in a milder one. That baseline assumes a reasonably efficient stove, adequate insulation, and seasoned hardwood, and it lines up with what the Chimney Safety Institute of America reports for primary wood-heat homes (3 to 6 cords a season) and with university extension guidance.
| Your situation | Rough cords for the season |
|---|---|
| Occasional fires, once or twice a week | Half to 1 cord |
| Regular evening fires, or heating one or two rooms | 1 to 3 cords |
| Wood stove as the main heat source | 3 to 6 cords |
| Large or drafty home, wood as primary heat | 6 or more |
The first time I ran these numbers for a 1,500 square foot house in a cold climate, the baseline said 3 to 4.5 cords, and my honest reaction was that it sounded like a lot of wood. Then I watched a modern stove go through roughly 4 to 8 logs an hour on a cold January day, and the math stopped feeling abstract. A cord is 128 cubic feet of stacked wood, which sounds enormous until you start feeding a stove around the clock.
The worked examples: three houses, three answers
The 1,000 square foot cabin, northern Wisconsin. Well insulated, modern stove, primary heat. Baseline: 2 to 3 cords of good hardwood. Order 3.5 and sleep well.
The 2,000 square foot colonial, mid-Atlantic. Wood supplements a furnace that does the overnight work, but the stove runs most evenings. This is the supplemental-heat case: 1 to 2 cords, call it 2.
The 900 square foot bungalow, North Carolina. Fireplace for ambiance a few nights a week, not a heat strategy. A single cord gets you through the season with margin.
Now the adjustments, because the baseline is only a starting point. Adjust upward if the home is poorly insulated, if you run an older or open fireplace (a fraction of a modern stove's efficiency), or if your winters run longer and colder than average. Adjust downward for a modern EPA-certified stove, excellent insulation, or milder winters. Species matters too: burning pine instead of oak means buying, stacking, and feeding noticeably more wood for the same heat, so check the firewood BTU chart before you order.
My rule: when in doubt, round up. Properly stored firewood does not go bad, it just becomes next winter's supply. Running out in January means paying whatever the remaining sellers ask, burning questionable wood, or both. And ask a neighbor what they burn. Nobody's model beats the person heating an identical house three doors down.
Frequently asked questions
How many cords of firewood do I need to heat my house for winter?
As a rule of thumb, 2 to 3 full cords per 1,000 square feet in a cold climate with wood as the primary heat source, and 1 to 2 cords per 1,000 square feet in milder regions. A 1,500 square foot home in a cold climate typically needs 3 to 4.5 cords. Adjust upward for poor insulation or an older stove, and downward for a modern EPA-certified stove or supplemental-only heating.
How much firewood do I need if I only burn occasionally?
For occasional evening fires, say once a week, a half cord is usually more than enough for the season. For outdoor fire pits burned about once a week, plan on roughly a full cord since wood burns faster outdoors.
Is it better to order too much or too little firewood?
Too much, if you have room to store it. Properly stored firewood (off the ground, top covered, sides open to airflow) keeps for years, so the surplus just becomes next season's supply. Running out in January means paying premium prices for whatever is available.
Does the species of wood change how many cords I need?
Yes, significantly. High-BTU hardwoods like hickory and oak pack roughly twice the heat per cord of softwoods like pine or cottonwood, so you burn fewer cords for the same heat. See our firewood BTU chart for the full species comparison, and how long each species takes to season.
How Much Wood Do You Actually Need?
Enter your heating setup and the calculator estimates cords per winter for your situation, including the species and stove adjustments.
Calculate Firewood NeedsEstimates only. Your actual burn depends on climate, insulation, stove efficiency, and wood condition. Before you buy, make sure you are getting a real full cord: how to tell if your firewood is a full cord.