Structures & Area Calculators
Building or calculating the area of outdoor structures? Our free tools help you estimate fencing materials, gutter and downspout sizes, pergola shade percentages, shed construction costs, and square footage. Choose a calculator below.
Fence Calculator
Free fence calculator — estimate the number of fence posts, rails, pickets, and overall material budget for installing wood or vinyl fencing.
Gutter & Downspout Calculator
Free gutter & downspout calculator — calculate roof catchment area, water run-off flow rates, recommended gutter size, and required downspout quantities.
Pergola Shade & Slat Calculator
Free pergola shade & slat calculator — calculate the percentage of shade cast by rafters/slats at different sun angles and estimate timber counts.
Shed Cost Calculator
Free shed cost calculator — estimate footprint area, framing studs, siding panels, roof rafters, and total construction cost.
Square Footage Calculator
Free square footage calculator — calculate area in square feet, square yards, or square meters for any shape. Perfect for patios, rooms, and gardens.