Estimate posts, sections, rails and pickets for a fence. Each dimension has its own unit selector (in/ft/yd/m).
Measure each straight run (any unit) and add them for the total length. Sections are the total divided by your post spacing (commonly 8 ft - use the preset), and you need one more post than sections. Rails are the per-section count; pickets are the length in inches divided by picket width plus gap. Add posts for gates and corners.