It's simple to calculate the amount of trusses needed for your roof with our online calculator. Once you know the length of your roof and on-centre spacing of the trusses you're good to go!
We also have a rafter length calculator if you're looking for more truss dimensions.
Calculate Truss Amount & Costs
How to Use
- Measurement Units: Choose either metres or feet.
- Roof Length: the length of the roof for which you are calculating the truss count.
- On-Centre Spacing: the centre-to-centre distance between trusses. The default value is 60 cm.
- Price per Truss (optional): estimate the total cost of the trusses.
- Calculate: Press the "Calculate" button to see how many trusses you will need and the total estimated cost for your project.
Note: This calculator assumes a simple gable roof for the purpose of these calculations.
Calculator checked on By Jamie
Uses
- Residential: determine the number of trusses needed for new homes or additions.
- Commercial: estimate truss requirements for larger roofs.
- Agricultural: calculate truss counts for barns, sheds, and other agricultural buildings.
- Renovation and Repair: assess the number of new trusses needed when repairing or renovating existing roofs.
- Architectural Design: Architects can integrate precise truss counts into their designs.
- Cost Estimation: Get an early estimate of the cost associated with the roof structure.
More Measurement Calculators
Rafter Length
Rainwater Collection
Roof Slope
Roof Tarp Size
Truss Count