Measure smart.
Build with confidence.
Get clear material estimates for flooring, tile, paint, concrete, gravel and more. Easy-to-use calculators, practical guides, and no account required.
Popular project calculators
Choose a tool, enter your dimensions and get a transparent estimate.
Tile Calculator
Estimate the number of individual tiles and full boxes for a rectangular project area.
Open calculator →Flooring & TileFlooring Calculator
Find flooring square footage, suggested order area and required cartons.
Open calculator →Outdoor & MaterialsConcrete Calculator
Estimate volume for a rectangular concrete slab and an approximate bag count.
Open calculator →Walls & SurfacesPaint Calculator
Estimate interior wall paint volume from wall area, openings and coat count.
Open calculator →Outdoor & MaterialsMulch Calculator
Estimate cubic yards and bags of mulch for a rectangular landscape bed.
Open calculator →PlanningSquare Footage Calculator
Calculate combined square footage and square meters for simple rectangular areas.
Open calculator →Start with dimensions
Enter real project measurements, not vague assumptions.
Adjust what matters
Change waste, carton coverage, depth or product yield.
Understand the estimate
Review formulas and examples before buying materials.
Guides worth reading before you buy
Material estimates work best when measurements and product details are correct.
How to Measure a Room for New Flooring
A practical measuring method for rooms, closets and unusual floor plans.
Read guide →PROJECT GUIDEHow Much Extra Tile Should You Buy?
Why tile overage changes with patterns, cuts and replacement needs.
Read guide →PROJECT GUIDEConcrete Bags vs. Ready Mix: How to Estimate
Compare material quantities before deciding how concrete will be supplied.
Read guide →A useful estimate starts with good measurements
Whether you are updating a bathroom, laying a gravel path or repainting a room, ordering materials can be confusing. The formulas are often straightforward, but selecting the right measurement, waste allowance and packaging size makes a real difference.
Project Calc Tools is a free collection of interactive estimating tools designed to show the calculations instead of hiding them. Our guides explain the assumptions so you can make changes with more confidence and compare the results with your supplier's recommendations.
These tools are for material planning. They do not replace product installation instructions, engineering decisions or local building-code requirements.