Home project calculators for paint, tile, concrete, and more.

DIY homeowners planning renovation projects need accurate material estimates before visiting the hardware store. SpecWhale covers paint coverage, tile quantities, concrete volume, flooring area, mulch depth, and lighting requirements — all with standard waste buffers built in.

Featured Tools for DIY Homeowners

Zero-upload, 100% private client-side calculators and converters.

Paint Calculator

Estimate gallons of paint needed for walls.

Home & DIY · Calculator

Tile Calculator

Estimate tile count from area and tile size.

Home & DIY · Calculator

Concrete Calculator

Estimate concrete volume in cubic yards for slabs from length, width, and depth.

Home & DIY · Calculator

Flooring Calculator

Estimate flooring material with waste allowance.

Home & DIY · Calculator

Mulch Calculator

Estimate mulch volume from area and depth.

Home & DIY · Calculator

Solar Panel Output Calculator

Estimate daily solar energy from panel watts, sun hours, and system efficiency.

Home & DIY · Calculator

Concrete Bag Count Calculator

Estimate the number of premixed concrete bags needed for a given volume.

Home & DIY · Calculator