Local processing

Firewood Size and Specification Checker

Enter length, thickness, split condition, and moisture to see which sales band a firewood lot belongs to.

The checker compares retail, business, and charcoal bands on the same screen, and it works with metric or imperial inputs in a browser only.

Retail, business, and charcoal in one view Metric and imperial inputs Wet basis and dry basis moisture URL sharing and local drafts

Firewood Size Checker

Retail, business, and charcoal in one view

Metric and imperial inputs

Wet basis and dry basis moisture

URL sharing and local drafts

All calculations stay in this browser and are not sent to a server.

Sort by market

See retail, business, and charcoal fits side by side before you pack or ship the lot.

Accepts common units

Type cm, mm, m, in, or ft. Bare numbers follow the selected preset.

Normalizes moisture basis

Wet-basis values are compared directly, and dry-basis values are converted automatically.

Share or restore the same lot

Copy a URL or keep a draft on this device for the next field visit.

How to use

Choose the market focus and unit system first.
Enter length, thickness, split condition, and moisture. Add units if you want to override the preset.
Switch moisture basis if the number you have is dry basis instead of wet basis.
Review the primary band, the secondary fits, and the live band comparison table.

Sample lots

Reference bands

These thresholds are built-in starter bands. The live checker shows the actual result for each lot.

Moisture is compared on a wet-basis scale inside the checker.

Band	Length	Thickness	Split	Moisture	Use
Retail premium	25-33 cm	5-9 cm	Standard or finer	20% wb max	Shelf-ready retail packs and premium firewood
Retail standard	20-40 cm	4-12 cm	Rough or finer	25% wb max	General retail packs and mixed lots
Business premium	30-50 cm	6-15 cm	Rough or finer	20% wb max	Premium wholesale lots and regular business orders
Business standard	25-60 cm	5-18 cm	Round or finer	30% wb max	Bulk business supply and recurring wholesale orders
Charcoal feedstock	30-120 cm	8-25 cm	Round or finer	30% wb max	Longer, thicker lots for charcoal use
Drying required	Same as the target band	Same as the target band	Same as the target band	Above the band limit, up to 70% wb	Seasoning queue before final sorting
Rework required	Outside the band	Outside the band	Split condition too weak	Above 70% wb or outside the band	Resplit, recut, or sort again

Basis and assumptions

The bands are starting points for quick sorting, not universal certification standards.
Wet-basis moisture is the internal comparison scale. Dry-basis numbers are converted before scoring.
Small boundary differences are treated as warnings so you can see how close a lot is to the edge.

Glossary

Market focus

The market you want to see first. Secondary fits stay visible below it.

Split condition

The lot's current split pattern, such as round, rough, standard, or fine.

Wet basis

Moisture measured against the total current weight of the lot.

Dry basis

Moisture measured against the dry weight of the material.

Secondary fit

Any band other than the primary band that still passes the lot.

Logic

cm = in × 2.54
MCwb = 100 × MCdb ÷ (100 + MCdb)
Pass = length ∧ thickness ∧ split ∧ moisture
Primary = first passing band in the selected focus order
Margin = smallest distance to any band boundary

Frequently asked questions

Why can the same lot fit more than one band?

Because the bands are overlapping by design. The primary band follows your market focus, and secondary fits remain visible.

Is moisture wet basis or dry basis?

Wet basis is compared directly. If you only know dry basis, switch the basis and the tool converts it for you.

Can I use inches and feet?

Yes. You can type imperial units directly, and bare numbers follow the imperial preset when it is selected.

What if the lot is too wet?

If the size and split fit but moisture is above the band limit, the checker shows Drying required and points to the best target band.

Are these thresholds universal?

No. They are starter bands. Use them as a practical sorting rule and adjust them to your local market if needed.

Important notes

These bands are practical starter rules, not product certification.
Local market rules, buyer rules, and packaging rules take priority.
Always confirm whether the number you have is wet basis or dry basis.
Use a bare number only when you are sure the preset matches your market.