About
Roofing Calculator is a free, browser-based set of planning tools for estimating roof geometry and project scope. It helps users calculate roof pitch, roof area, shingle quantities, metal roofing needs, rafter length, and rough replacement cost ranges from basic project inputs. The calculators are useful for homeowners, contractors, estimators, and property managers who want a fast sanity check before requesting bids or ordering materials. Users can work through the tools individually depending on the job, whether they are checking slope, measuring coverage, or comparing material options. The results are intended as estimates for planning and should not replace an onsite inspection or professional assessment. It is especially helpful for early-stage renovation planning, budget ranges, and material takeoff checks.