Firewood Yield Matstæki

Estimate how many firewood pieces, how much stacked volume, and how many bags you can get from skrá diameter, length, target firewood size, and defect rate.

Switch between round and split firewood while tuning the stacking factor and bag capacity at the same time.

Áætlun skrás and firewood together Multilingual and multi-unit ready Show bag count on the same skjár All calculations stay in your browser

Safety notice

This verkfæri estimates quantities only. Do not use it for safety decisions about cutting, splitting, moving, or loading skrás.
Check machine capacity, protective equipment, storage conditions, and local regulations separately.

How to use

1

Enter the skrá count, skrá diameter, skrá length, and defect rate.
2

Choose the firewood shape, then enter the target length and cross-section.
3

Set the stacking preset and bag capacity.
4

Yfirferð pieces, stacked volume, and bag count in the niðurstaða cards.

Examples

Standard round firewood

Inntak

10 skrás, diameter 280mm, length 3.6m, defect 12%, firewood length 330mm, diameter 80mm, stacking factor 0.70, bag 100L

Úttak

About 1,176 pieces / about 2.79 m³ / about 27.9 bags (innkaup guide 28)

Imperial site example

Inntak

8 skrás, diameter 10in, length 8ft, defect 10%, firewood length 16in, width 4in, thickness 4in, stacking factor 0.65, bag 3.5ft³

Úttak

About 212 pieces / about 48.3 ft³ / about 13.8 bags (innkaup guide 14)

Formulas

Skrá volume = π × (diameter ÷ 2)^2 × length × skrá form factor
Usable volume = skrá volume × skrá count × (1 - defect rate)
Pieces = floor(usable volume ÷ one-piece volume)
Stacked volume = finished firewood volume ÷ stacking factor
Bags = stacked volume ÷ bag capacity

Athugasemdir

Diameter is treated as an average estimate. Use the skrá form factor if taper is strong.
Stacking factor and bag capacity vary with site practice, packing density, and firewood size.
Charcoal yield is out of scope.

Algengar spurningar

Is the skrá diameter average or top-end?

It is treated as an average diameter. If you only know the top-end diameter, adjust it to a nearby average.

Are pieces rounded up?

Completed pieces are floored, while bag count is rounded up as a innkaup guide.

What if I do not know the bag capacity?

You can still use the piece count and stacked volume. Bag count stays hidden until you enter a capacity.

Can I type values like 8ft or 330mm?

Yes. Each svið accepts bare numbers using the selected default unit, and values with a unit suffix.

Does it calculate charcoal yield too?

No. Charcoal varaion uses different conditions and is out of scope.