What this calculator does
Firewood needed for the season works out how many cords of firewood a heating season needs, from stove burn rate and heating days. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaWood (ft³) = burn rate × hours burning per day × heating days; full cord = 4 ft × 4 ft × 8 ft = 128 ft³
The inputs explained
| Field | What to enter |
|---|---|
| Stove burn rate (ft³/hour) | A number, measured in ft³/hour. Starts at 0.75. |
| Hours burning per day | A number. Starts at 6. |
| Heating days in the season | A number. Starts at 120. |
| Stack length available (ft) | A number, measured in ft. Starts at 8. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with stove burn rate
Every other input is held at the calculator’s starting values while stove burn rate varies. Select any row to load that scenario into the calculator.
How the answer changes with stove burn rate