Truss Cost Calculator
Estimate the total cost of pre-fabricated roof trusses from the number needed and material and labor cost per truss.
How this calculator works
Once you know how many trusses your roof needs, pricing the job comes down to two simple totals added together: what the trusses themselves cost, and what it costs to set them. This calculator multiplies your truss count by a material cost per truss, multiplies the same count by a labor cost per truss, and adds the two results.
Formula: Total cost = number of trusses × material cost per truss + number of trusses × labor cost per truss.
Worked example
20 trusses, $120 material cost each, $40 labor cost each:
- Material: 20 × $120 = $2,400
- Labor: 20 × $40 = $800
- Total: $3,200
Notes
Use the Roof Truss Calculator first to find how many trusses your building needs from its length and truss spacing. Enter that count here along with your cost figures.
Longer spans, steeper roof pitches, and engineered connector plates all raise the per-truss material cost above a basic short-span truss, so the material cost per truss you enter should reflect a quote for your specific roof, not a generic price.
How to use
Enter the number of trusses your project needs, the material cost per truss, and the labor cost per truss. The calculator adds up the material total and the labor total to give you an estimated total cost for the truss package and installation.
Estimates only. Actual truss cost depends on span, pitch, engineering requirements, and crane/delivery access — get a quote from a truss manufacturer.
Frequently asked questions
Where do I get the number of trusses to enter?
Use the Roof Truss Calculator first. It takes your building's length and your planned truss spacing on center and returns a truss count. Plug that count into this calculator along with your material and labor cost per truss to get a total project cost.
Why does material cost per truss vary so much between quotes?
Truss price depends on span, roof pitch, and the engineered connector plates each truss needs to carry its load. A longer span or steeper pitch usually means more lumber and stronger plates, which raises the material cost per truss above a basic short-span design.
Does this total include delivery or crane costs?
No. This calculator only multiplies truss count by material cost and by labor cost per truss, then adds the two together. Delivery, crane rental, and site access charges are separate costs that a truss manufacturer or installer would quote on top of this estimate.
Can I use this for a small addition instead of a whole roof?
Yes. The formula works the same regardless of project size — just enter the truss count for the addition, along with the material and labor cost per truss you've been quoted, and it returns the same material-plus-labor total.
Estimates only. Verify quantities with your supplier before purchasing.