Downspout Count Calculator
Calculate the number of downspouts needed based on roof drainage area, gutter length, and rainfall intensity. Includes downspout sizing guidance.
Free Gutters Calculators
4 toolsGutter length, downspout, and fascia calculators. Browse our free gutters tools below — no sign-up required.
Fascia Board Calculator
Calculate fascia board material needed for eave edges. Estimates board count, linear feet, and optional fascia cover/wrap from perimeter measurements.
Gutter Length Calculator
Calculate gutter length needed for all eave edges. Estimates sections, hangers, inside/outside corners, end caps, and seamless gutter total footage.
Gutter Size Calculator
Determine the right gutter size based on roof area and local rainfall intensity. Compare 5-inch and 6-inch K-style gutter drainage capacity.