Timber Framing Calculator: How Much Wood Do I Need?

🪵 Timber Framing Calculator

Estimate board feet, beam counts & lumber quantities for your timber frame project

Quick Presets
🔧 Project Settings
📊 Timber Framing Results
🪵 Wood Species — Board Feet Weight Reference
32 Douglas Fir
lbs / BF (green)
47 White Oak
lbs / BF (green)
25 E. White Pine
lbs / BF (green)
28 Hem-Fir
lbs / BF (green)
37 S. Yellow Pine
lbs / BF (green)
23 W. Red Cedar
lbs / BF (green)
29 Red Pine
lbs / BF (green)
27 White Spruce
lbs / BF (green)
📏 Board Feet by Timber Size & Length
Timber Size 8 ft piece 10 ft piece 12 ft piece 16 ft piece 20 ft piece
4x410.7 BF13.3 BF16 BF21.3 BF26.7 BF
4x616 BF20 BF24 BF32 BF40 BF
6x624 BF30 BF36 BF48 BF60 BF
6x832 BF40 BF48 BF64 BF80 BF
8x842.7 BF53.3 BF64 BF85.3 BF106.7 BF
8x1053.3 BF66.7 BF80 BF106.7 BF133.3 BF
10x1066.7 BF83.3 BF100 BF133.3 BF166.7 BF
12x1296 BF120 BF144 BF192 BF240 BF
📐 Stud / Joist Counts by Wall Length & Spacing
Spacing 12 ft span 16 ft span 20 ft span 24 ft span 32 ft span 40 ft span
12 in o.c.131721253341
16 in o.c.101316192531
24 in o.c.7911131721
48 in o.c.4567911
🏗 Common Project Board Feet Estimates
Project Dimensions Est. Board Feet Pieces (12 ft) Weight (lbs)
Garden Shed12x16 ft480 BF40 pcs~15,360
Garage16x20 ft820 BF68 pcs~26,240
Small Cabin20x24 ft1,440 BF120 pcs~46,080
Workshop24x32 ft2,100 BF175 pcs~67,200
Farmhouse28x40 ft3,200 BF267 pcs~102,400
Large Barn40x60 ft6,500 BF542 pcs~208,000
💡 Board Feet Formula: Board Feet = (Thickness in inches x Width in inches x Length in feet) / 12. For example, a 6x8 timber that is 12 ft long = (6 x 8 x 12) / 12 = 48 board feet. Always measure nominal dimensions, not actual dressed dimensions.
⚠ Waste Factor Tip: Add at least 10% overage for standard projects. For complex roof framing with angled cuts, add 15–20%. For simple rectangular floor or wall frames with minimal cuts, 5–8% is usually sufficient. Green (unseasoned) timber can shrink 3–5% after drying.

Timber framing is traditional way to build that bases on big and heavy timbers to form the skeletal structure. Instead of depend on slim timbers as 2×6 this method uses squared timbers that suit exactly. What genuinely sets such framing is its distinctive combination…

The way those timbers connect to each other. Big wooden pegs keep everything safe, no nails or metal seals. Metal brackets?

What is timber framing?

You will not find them here, because the whole system bases on wood that suits directly against wood.

Timber framing and the method of post-and-beam are quite alike. Both create supporting structure that bears the whole weight of the house. Hence, internal load-bearing walls become unnecessary, what opens big possibilities for large and continuous rooms.

The roots of this are deep. Long before modern techniques appeared, you built houses from heavy wooden columns and beams that you combined by means of precise and complex joints. For more than thousand years, wooden frames were popular through large parts of Europe, where wood was easily found.

In those early, simple structures, the timbers were either laid on the ground or planted in it.

Use local wood is other advantage of this method. You can find or buy dead trees, cut them in logs, and later work them in beams by means of simple wooden techniques. Like this you preapre your material for the framing.

Really, it costs more than modern stick-framing and require much more time. Both the materials and the skill come with higher prices. Even so, you comparison showed interesting image: stick-framed house with real wood cost around 280k only for the framing, during red oak wooden framing cost around 80k. So, in the right circumstances, it indeed can be the cheaper choice.

Every part of wooden framing calls “bent”. When the frames are made and built, you can send them outside and later raise them by means of local team. You will require plan first, maybe of architect or engineer.

And also clever framer and reliable source of wood.

For insulate wooden framing without excessive thermal toll, you must roll it in protective shell. Panels well operate for that, although adding TJI-panels to the exterior framing is other opportunity. Some builders do exterior framing with 2×6 and pine boards instead of plywood, filling the holes by means of insulation.

The Timber Framers Guild exist to back and promote that craft. What is genuinely unique here are that the clients and homeowners can help cut the timbers and raise the framing… Practical work, that rarely happens in other constructions.

Timber Framing Calculator: How Much Wood Do I Need?

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