Overview
What Is a Gutter Calculator?
This tool calculates total gutter length needed based on your roof's perimeter measurements, including a small waste allowance.
Calculate gutter length needed for your roof.
This tool calculates total gutter length needed based on your roof's perimeter measurements, including a small waste allowance.
Useful for planning a gutter replacement or new installation project.
Input the combined length of roof edges needing gutters.
The result includes a small waste allowance and updates automatically.
Sum the length of all roof edges where gutters will be installed.
Yes, 5-10% extra is commonly recommended for seams, corners, and cutting waste.
No, this calculates horizontal gutter length only - downspouts are typically calculated separately based on drainage needs.
This varies by roof size and local rainfall - a common guideline is one downspout per 30-40 feet of gutter, though local codes may specify requirements.
No, calculations happen entirely in your browser.
No, the length calculation is the same regardless of gutter material (aluminum, vinyl, steel, etc.).
Yes, break irregular rooflines into straight sections, measure each, and sum the totals.
For larger or complex projects, professional installation ensures proper pitch and drainage - DIY is feasible for straightforward single-story projects.
Yes, completely free with no sign-up required.