Gutter Calculator
Estimate gutter length, stock sections, downspouts, hangers, corners, end caps and material cost for roof eaves.
Default project preview
126 ft
Gutter sections
13
Downspouts
3
Hangers
61
Corners and caps
8
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Order length = eave length × allowance. Sections = round up (order length ÷ stock length). Downspouts = round up (eave length ÷ maximum spacing).
FAQ
Gutter Calculator questions
How far apart should downspouts be?+
Spacing depends on rainfall, roof area and gutter capacity. The entered spacing is a planning input, not a drainage design.
How close should gutter hangers be?+
Manufacturer guidance and snow loads control spacing. Many systems use closer spacing in severe climates.
Does this calculate elbows and extensions?+
No. Downspout routing, elbows, outlets and drainage extensions require a site-specific count.