Firewood Shed Size: How Much Space Do You Need for a Cord?
Quick answer: A full cord of firewood is 128 cubic feet, a stack 4 feet high, 4 feet deep and 8 feet long. To store one cord, plan a shed bay of roughly 4x8 feet stacked 4 feet high, or 4x6 feet stacked about 5.5 feet high. Most homes that heat mainly with wood burn 3-6 cords per season, so a 2-3 bay shed holding 4-8 cords is a common target.
If you burn wood in a stove, insert or fireplace, the size of your woodshed decides whether you burn dry, efficient firewood or wet wood that smokes and coats your chimney. This guide shows how to measure a cord, how much space you need for your yearly supply, and the design details that help wood season properly.
Key Takeaways
- A full cord is 128 cubic feet (4 x 4 x 8 feet). A face cord is one row 4 feet high and 8 feet long, usually about one third of a full cord with 16-inch logs.
- Each 4-foot-deep bay stacked 6 feet high holds about 1 cord for every 5.3 feet of length.
- Primary wood heat typically uses 3-6 cords per season; occasional fireplace use may be under 1 cord.
- Airflow matters as much as size: raise the floor, leave the sides open or slatted, and give the roof a 12-18 inch overhang.
- Two or three bays let you burn one year's wood while the next year's supply seasons.
How Big Is a Cord of Firewood?
A full cord is the standard legal measure for firewood sold in the United States: a tightly stacked pile measuring 128 cubic feet, traditionally 4 feet high, 4 feet deep and 8 feet long. The 128 cubic feet includes the air gaps between logs, so the actual wood volume is lower.
When buying, ask for the stacked dimensions. A loose "truckload" is not a reliable measure.
What is a face cord?
A face cord (also called a rick or stove cord) is a single row of wood 4 feet high and 8 feet long, with a depth equal to the log length. With common 16-inch logs, a face cord is 4 x 8 x 1.33 feet, about 43 cubic feet, or one third of a full cord. With 24-inch logs it is half a cord. Because the term is not standardized, always confirm the log length before comparing prices.
How Much Firewood Does a Household Burn per Season?
Usage depends on your climate, home size and insulation, stove efficiency and wood species. Dense hardwoods like oak and hickory carry more heat per cord than pine or spruce. These rough ranges are a reasonable starting point:
- Occasional fireplace fires (weekends, holidays): about 0.5-1 cord per season.
- Supplemental heat (stove used most evenings alongside a furnace): about 1-3 cords.
- Primary heat in a moderate climate: about 3-5 cords.
- Primary heat in a cold northern climate or a large, older home: about 5-8 cords or more.
New to wood heat? Track how fast your first cord goes in a cold month and multiply by your heating season.
What Size Firewood Shed Do You Need?
Start with how many cords you want on hand, then decide on a practical stacking height. Most people stack to 5-6 feet so the top row is still reachable without a step stool. Stack depth is usually 4 feet (three rows of 16-inch logs) or 2 feet for a shallow lean-to rack.
The table below shows gross stacking capacity for common bay sizes. Real capacity is usually 10-20% lower once you leave airflow gaps, a few inches at the back wall and room under the roof framing.
| Stacking area (depth x length) | Stack height | Stacked volume | Approx. capacity |
|---|---|---|---|
| 2 ft x 8 ft (lean-to rack) | 4 ft | 64 cu ft | 0.5 cord |
| 4 ft x 8 ft | 4 ft | 128 cu ft | 1 cord |
| 4 ft x 8 ft | 6 ft | 192 cu ft | 1.5 cords |
| 4 ft x 12 ft | 6 ft | 288 cu ft | 2.25 cords |
| 4 ft x 16 ft | 6 ft | 384 cu ft | 3 cords |
| 8 ft x 12 ft (two rows deep) | 6 ft | 576 cu ft | 4.5 cords |
| 8 ft x 16 ft (two rows deep) | 6 ft | 768 cu ft | 6 cords |
| 8 ft x 20 ft (two rows deep) | 6 ft | 960 cu ft | 7.5 cords |
Stacking 8 feet deep works best when you can load from both sides. For most homes, a long, 4-foot-deep shed with several open bays is easier to manage than a deep, square one.
Plans like the 7-cord split-roof firewood pavilion with 3 bays are sized for full-time wood heat, while smaller designs suit supplemental burners.
DIY Butterfly Roof Firewood Shed Plans: 5 Cord Pavilion, 2 Bay PDF: instant PDF download with illustrated steps, a shopping list and cut lists.
How Long Does Firewood Need to Season?
Freshly cut wood can be half water by weight. Well-seasoned firewood is generally considered ready at about 20% moisture content or less, which you can check with an inexpensive moisture meter on a freshly split face. Typical drying times after splitting and stacking:
- Softwoods (pine, spruce, fir): about 6-12 months.
- Most hardwoods (maple, ash, cherry, birch): about 9-12 months.
- Oak and other very dense hardwoods: often 1-2 years.
Wood dries much faster once split, and sun and steady wind speed things up. This drying time is the main reason your shed should hold more than one season of wood.
Woodshed Design Details That Keep Wood Dry
Airflow
A firewood shed is a drying structure, not a storage box. Leave the front open, and use slatted sides and back with gaps of about 1 inch between boards so air can pass through the stacks. If you can, face the open side toward the prevailing breeze or the afternoon sun.
Raised floor
Keep the bottom row at least 4-6 inches off the ground so it does not wick moisture. Common options are pressure-treated floor joists with spaced decking, a gravel pad with treated sleepers, or concrete piers under a slatted floor. Our guide to shed foundation options: gravel, skids and concrete compares these bases in more detail.
Roof and overhang
A simple skillion (single slope), gable or butterfly roof all work. Give it an overhang of about 12-18 inches on the open side to keep blowing rain off the stack, and more where wind-driven rain is common. Metal roofing is light and sheds snow well.
Location
Place the shed close enough to carry wood in winter, but not against the house. Firewood can harbor insects and rodents, and in wildfire-prone areas fire safety guidance commonly recommends keeping it at least 30 feet from the home.
Why a 2-3 Bay Rotation Design Works
A multi-bay shed turns firewood into a simple rotation. Each bay holds roughly one season's supply at a different stage:
- Burn bay: fully seasoned wood you are using this winter.
- Seasoning bay: wood split last year, drying for next winter.
- Fresh bay: wood split this year, for the winter after next (useful for oak and other slow-drying species).
When the burn bay is empty, you refill it with fresh wood and the other bays move up one stage. Two bays are enough for softwoods and fast-drying hardwoods; three bays give oak burners a full two years of drying. A closed side room, like the one in this saltbox firewood shed with a storage room, adds dry space for kindling, tools and a chainsaw.
Before you build, check whether your project needs approval. Small open woodsheds are often exempt, but rules vary, so read do you need a permit to build a shed and confirm with your local building department.
Frequently Asked Questions
How many square feet do I need to store one cord of firewood?
One full cord stacked 4 feet high and 4 feet deep needs a floor area of 4x8 feet, or 32 square feet. If you stack 6 feet high, the same cord fits in about 4x5.3 feet, roughly 21 square feet. Add a little extra for airflow gaps and access.
Is a face cord the same as a full cord?
No. A face cord is a single row 4 feet high and 8 feet long, while a full cord is 4 feet deep. With 16-inch logs, a face cord is about one third of a full cord, so three face cords roughly equal one full cord.
Should a firewood shed have walls?
A firewood shed should have a roof and, ideally, slatted sides and back, but it should not be fully enclosed. Solid walls trap humidity and slow drying. Gaps of about 1 inch between side boards and an open front give the steady airflow wood needs to season.
How many cords of wood do I need for winter?
Homes that rely on wood as their primary heat source typically burn about 3-6 cords per season, and more in very cold climates or large, drafty houses. Supplemental burners often use 1-3 cords, and occasional fireplace users may need less than 1 cord.
Plan Your Woodshed Around Your Burn Rate
Size your firewood shed for at least one full season of wood, then add a second or third bay so next year's supply can dry while you burn this year's. Keep it raised, roofed and open to the breeze, and you will have dry wood every winter. When you are ready to build, browse our firewood shed plans for 2-bay and 3-bay KRMPLANS designs with step-by-step drawings, cut lists and shopping lists.
