HomeFirewood AdviceHow Much Firewood

How Much Firewood
Do I Actually Need?

Most people either run out in February or find a ton bag rotting in the garden in May. Three questions and a straight answer, worked from your own fire rather than somebody’s average.

7 min read Written for Dorset

Units, and why they matter

Firewood is sold by volume, and the volume you should care about is the loose cubic metre — wood as it lands, air gaps and all. Everything we sell is priced that way, and every size is published:

What it isVolumeRoughly
Net bag0.03m³a carry-home bag, one evening
Barrow bag0.275m³one wheelbarrow
Ton bag1.1m³the standard bulk bag, craned off
Half transit2.2m³half a van, tipped loose
Full transit4.4m³a full van, tipped loose

Be careful with anyone selling by “load”, “truckload” or “builder’s bag” without a number attached. Those words mean whatever the seller wants them to mean. A cubic metre is a cubic metre.

Work out your winter

Three questions. It works from what your fire actually is and how you actually use it, rather than from an average that fits nobody.

1What you burn on
2Roughly how big is the room5 kW
3How often, through the winter
How this is worked out

From the heat output of your appliance over a five-hour evening, at 4.1 kilowatt hours per kilo of dry hardwood, across a normal Dorset season of about 26 weeks. It is an estimate, not a promise — a cold January burns more than a mild one.

What typical households use

For a sense check, here is what people in Bournemouth and Poole actually order in a season.

HouseholdPer winterUsually buys
Weekend fire, modern stove1–1.5m³a ton bag, sometimes two
Most evenings, 5kW stove3–4m³a full transit
Every evening, large stove5–7m³a full transit plus a half
Open fire, used regularly6–9m³two full transits
Stove as the main heating7–10m³two full transits, split over the season

The single biggest variable is not the stove, it is whether it is a stove or an open fire. An open fire sends most of its heat up the chimney and gets through roughly twice the wood for the same warmth in the room.

Buying it in one go

A full transit is 4.4m³ at £420 in seasoned mixed. That is £95 a cubic metre. The same wood in ton bags is £109 a cubic metre, and in net bags £400. You are not buying better wood in the small bags — you are buying handling and packaging.

22% cheaper per cubic metreto take a full transit of kiln dried rather than four ton bags of the identical logs. If you have somewhere dry, buying big once is the single easiest saving in firewood.

The catch is that a full transit arrives tipped loose. It is a heap on your drive, and moving 4.4 cubic metres of logs into a store is a genuine afternoon’s work. A ton bag, by contrast, is craned off and set down wherever you point.

Not sure which size fits your space?

Every load size, what it looks like when it lands, and the price per cubic metre.

Compare Load Sizes

Can you actually store it?

This is the question that should decide the order, and it is the one people skip. Dry wood delivered in October can be wet wood by January if it sits on bare ground under a tarp.

  • Off the ground — pallets, gravel, anything. Ground moisture wicks straight up into the bottom layer.
  • Covered on top, open at the sides — a stack needs air moving through it. A tarp wrapped all the way round traps moisture and grows mould.
  • Somewhere you will actually walk to in the rain in February. The wood store at the bottom of the garden gets used far less than the one by the back door.

If you have no dry space at all, buy ton bags rather than a tipped load — the bag itself keeps the worst off, and you can take one at a time. It costs more per cubic metre, and it is still the right call if the alternative is a soaking heap.

There is a fuller guide to this: how to store firewood so it stays dry.

Sizing Questions

How Much, How Long

How much firewood do I need for a winter?
For a 5kW stove burning most evenings through a normal Dorset winter, budget 3 to 4 cubic metres — close to a full transit load. Weekend-only use is nearer 1 to 1.5 cubic metres. An open fire used regularly can reach 6 to 9. The calculator on this page works it out from your own appliance and habits.
How long does a ton bag of logs last?
A ton bag is 1.1 cubic metres. On a 5kW stove burning four or five evenings a week it lasts roughly eight to ten weeks — so two or three ton bags is a typical winter. On an open fire, expect closer to four or five weeks.
How much does a full transit of firewood cost?
A full transit is 4.4 cubic metres. Seasoned mixed is £420, kiln dried £450, seasoned hardwood and seasoned ash £460 each, and unseasoned £260. All delivered and including VAT, free across 23 Dorset postcodes.
Is it cheaper to buy firewood in bulk?
Considerably. A full transit of kiln dried works out at about £102 a cubic metre against £132 for the same wood in ton bags — roughly 22% cheaper. The only reason not to is storage: a full transit arrives tipped loose and needs somewhere dry to go.
When should I order firewood for winter?
Early autumn is the sweet spot. Prices do not change through the season — our list is our list — but availability of delivery days tightens sharply from November. Ordering in September or October costs the same and gets you a much better choice of dates.
Will a full transit fit on my driveway?
It arrives as a tipped heap roughly the size of a small car, so you need somewhere it can go without blocking the drive. If that is a problem, a half transit or ton bags are the answer — ton bags are craned off and set down exactly where you point, which suits tight access.

Order the winter in one go and stop thinking about it.

A full transit is 4.4m³ tipped where you want it, £420 in seasoned mixed.

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