Answers to common questions about home improvement calculators and DIY project planning.
Yes, all calculators on FixNDIY are completely free to use. No signup, no account, no hidden fees.
Our calculators use industry-standard formulas to provide reliable estimates. However, actual project costs vary based on location, material quality, contractor rates, and site-specific conditions.
Yes, our estimates give you a solid baseline to compare against contractor quotes. We recommend getting at least 3 quotes from licensed contractors.
Measure the length and width of your home's footprint (the ground floor dimensions). Our calculator applies the roof pitch multiplier to get the actual roof area.
Your footprint is the ground-floor dimensions of your home. The actual roof area is larger because of the slope (pitch). A roof with a 6/12 pitch has about 12% more area than the footprint.