Pergola Material Calculator
Counts posts on perimeter grid, one beam row each direction, rafters on short span.
Reviewed by MaterialNeeded Editorial Team, Editorial review for field workflows and ordering assumptions.
Step 1: Units
Step 2
Enter project measurements
Use decimals if needed (e.g. 3.5).
How to use this calculator
Footprint, post spacing, rafter spacing.
What the math is doing
Counts posts on perimeter grid, one beam row each direction, rafters on short span.
Frequently asked questions
Hardware?
Structural screws separate.
Shade?
Purlin count changes.
Footings?
Use deck footing calculator.
Wind uplift?
Engineering may be required.