Real Numbers for Your Next Project — Basic DIY Calculators, Free
Plan smarter, estimate costs, and avoid expensive surprises with these basic calculators created from real-world DIY experience.
Looking for the Online Master Homeowner Calculator?
Active Homeowner Toolkit members can access all 15 planning tools here.
DIY vs. Hire Calculator
Compare a professional quote with your DIY materials, tools, and time to estimate your potential savings and decide whether to DIY or hire.
Should I DIY This? Calculator
Evaluate project difficulty, safety risks, required skills, tools, and potential consequences to see whether a project is a good DIY fit or when hiring a professional may be the smarter choice.
Painting Calculator
Estimate how much paint, primer, and supplies you need based on room dimensions, doors, windows, coats, coverage, and waste allowance.
Flooring Calculator
Calculate the flooring materials you'll need by estimating square footage, waste allowance, boxes required, underlayment, and total project cost. Perfect for LVP, laminate, hardwood, and engineered flooring.
Ready for the Master Homeowner Calculator?
Go beyond the free basic calculators with the online master homeowner calculator—a powerful all-in-one system for project costs, materials, DIY risk, maintenance, planning, home records, and smarter decisions.