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Enter your values, then click Calculate result.How this calculator helps
This firewood calculator converts a measured rectangular stack into full-cord equivalents. A full cord is a stacked-volume unit of 128 cubic feet, including ordinary spaces between pieces; it is not 128 cubic feet of solid wood. Measure the actual stack length, depth and height in feet. The additional price output uses your full-cord rate and does not fetch a local seller price. The calculation helps describe a delivery or compare quantities, while wood species, moisture and heating characteristics remain separate questions.
How to use it
- 1
Measure a reasonably rectangular stacked pile in feet: length, full depth and height.
- 2
Enter a price per full cord if you want a price comparison, or zero to focus only on quantity.
- 3
Click Calculate result to submit these values. Input edits keep the previous result until the next click.
- 4
Compare the supporting outputs with the worked example and retain the input units with your result.
Formula and methodology
Stacked ft³ = length ft × depth ft × height ft. Full-cord equivalent = stacked ft³/128. Indicative price = cords × user-entered price per full cord.
The calculator applies the displayed arithmetic to the values entered on this device. It does not silently load a local tax rate, currency conversion or commercial assumption.
Worked calculation example
A neatly stacked 8 × 4 × 4 ft rectangular stack occupies 128 ft³, equivalent to one full cord. An 8 × 4 × 2 ft stack occupies 64 ft³, or half a cord.
How to interpret your result
Measured rectangular stacked volume; no universal face-cord or loose-load conversion. The cord fraction relates the measured stacked envelope to a full cord. It does not count solid timber alone. Price scales that fraction by your supplied rate without judging firewood quality or the seller’s measurement agreement.
For different inputs or formulas, use Cubic Yard Calculator; Volume Calculator — Boxes, Tanks, Ponds and Tubes; Unit Price Comparison Calculator.
Related questions this calculator covers
- firewood calculator cord
Scenario comparison
| Scenario | What it shows |
|---|---|
| 8 × 4 × 4 ft | 1 full cord. |
| 8 × 4 × 2 ft | 0.5 full cord. |
| 1 cord at a supplied rate of 250 | 250 before excluded charges. |
Common mistakes to avoid
- Ignoring the stack depth.
- Treating a loose load as a solid rectangular stack.
- Assuming every face cord has the same fraction of a full cord.
Multiply the cord equivalent by 128 to recover stacked cubic feet. Independently multiply all three stack dimensions, then confirm the monetary output uses a price per full cord rather than another sales unit.
Authoritative reference. Measured rectangular stacked volume; no universal face-cord or loose-load conversion.What can affect the result?
A stack has three dimensions
The front face alone cannot determine volume. Two stacks can have the same length and height but different depths and therefore different full-cord equivalents. Record the depth across the complete stack, not only a nominal log length if several rows are present. Split an uneven pile into non-overlapping rectangular sections and sum their volumes, keeping a note of how each was measured. A larger outer rectangle that includes a substantial empty recess overstates the occupied stacked volume. The geometry assumes the measured dimensions describe the stack reasonably well.
Face cord, rick and loose loads
A term such as face cord or rick may describe a stack's front dimensions without a fixed depth. It is not safe to assume it always equals one third of a full cord. The actual dimensions determine the equivalent. Likewise, a loose pile or truckload has a different packing arrangement from a neatly stacked pile. This tool supplies no universal loose-to-stacked conversion factor. Ask a seller for the basis of their advertised quantity and a receipt with agreed units. A mathematical estimate does not determine whether a sale complies with local weights-and-measures rules.
Volume does not determine heat
Equal stacked volumes can contain different amounts of wood material and provide different useful heat because piece sizes, species, moisture and packing differ. The calculator does not predict burn time, energy content, seasoning readiness or appliance suitability. Those require additional measurements or product guidance. A low price per volume is not necessarily a low cost per useful heat unit. Keep purchasing comparisons on the same volume basis first, then consider quality information separately rather than inventing a universal density or energy figure.
Price, rounding and records
Multiplying the full-cord equivalent by a price per full cord gives a proportional amount. It excludes delivery, stacking, taxes, minimum orders and negotiated pricing unless already included in that unit rate. A seller may charge by a different package, so do not apply the output as a binding invoice. Measure after stacking when you need a stacked-volume estimate and retain the three measurements with the receipt. Do not round each dimension aggressively before multiplying. The displayed precision does not remove uncertainty from an irregular stack or an unclear sales unit.
Privacy and browser processing
Values entered on this page are processed in the current browser session. SolvePilot does not require an account and does not receive the values entered into the calculator. Refreshing or closing the page clears the working values unless the browser itself restores a previous session. Avoid entering identifying or account information because the calculation needs summary values only.
Accuracy and verification
Accuracy depends first on input quality. Confirm definitions, scales, dates and source information before entering a value. Keep an independent record of any result used for planning because this page does not create an official statement or retain a calculation history.
Limits of this estimate
Measured rectangular stacked volume; no universal face-cord or loose-load conversion. Results describe the entered model only. Check source measurements and assumptions independently. Positive numeric inputs smaller than 0.000000001 are outside the supported calculation range. Calculator inputs are processed locally by the shared browser interface; no professional evaluation is performed.
Sources and review information
Frequently asked questions
How many cubic feet are in a full cord?＋
A full cord is 128 cubic feet of stacked volume. The standard example is 8 feet long, 4 feet deep and 4 feet high. Other dimensions can represent the same volume, so calculate all three measurements rather than relying only on appearance.
Is a face cord always one third of a cord?＋
No universal fraction is assumed here. Its actual depth matters. An 8-by-4-foot face with a 16-inch depth is about 42.67 cubic feet under rectangular geometry, but another log length changes that quantity. Measure and confirm the seller definition.
Can I calculate from a truck bed size?＋
A loose load is not a neatly stacked rectangular pile, so the stack method cannot reliably infer full cords from nominal truck capacity. There is no packing factor in this calculator. Stack and measure the wood or use an independently validated quantity method.
Does the price include delivery?＋
Only if the supplied price per full cord includes it on the same proportional basis. Flat delivery charges and minimum orders are not modelled separately. Keep the volume comparison distinct from the actual commercial quote and its service terms.
Can this estimate firewood weight?＋
No. Weight requires information about species, moisture and packing or a direct scale measurement. The output is stacked volume only. It would be misleading to attach one universal weight to every full cord of firewood.