Calculate gutters, downspouts, and hardware needed
Our gutter calculator helps you estimate the materials needed for a complete gutter system installation, including gutter sections, downspouts, elbows, and hangers. Whether you're replacing old gutters or installing new ones on a home addition, this tool provides comprehensive material lists for your project.
Properly sized and installed gutters protect your home's foundation, siding, and landscaping from water damage. The calculator accounts for standard 10-foot gutter sections and estimates hardware based on industry best practices - hangers every 2 feet and downspouts typically every 20-30 feet of gutter run.
This calculator is ideal for DIY homeowners tackling gutter replacement, contractors preparing estimates, and anyone wondering "how many downspouts do I need?" or "how much does it cost to replace gutters?" Remember to factor in end caps, miters for corners, and sealant in your total material list.
Follow these steps to calculate your gutter materials: