Construction

Concrete, paint, flooring, roofing — estimate materials before you build.

Concrete Calculator

Cubic yards of concrete and number of bags for any slab or footing.

Paint Calculator

Gallons of paint needed for a room, with door and window deductions.

Flooring Calculator

Square feet of flooring with waste allowance and box count.

Gravel Calculator

Cubic yards and tons of gravel for driveways, paths, and landscaping.

Mulch Calculator

Cubic yards and bags of mulch for garden beds and landscaping.

Fence Calculator

Posts, rails, and pickets needed for any wood fence.

Roof Pitch Calculator

Roof pitch in X:12, degrees, and area multiplier from rise and run.

Staircase Calculator

Steps, riser height, and total run for building a staircase.

Explore related categories

Mortgage Calculator

See your monthly payment, total interest, and PMI risk for any home loan.

Loan Calculator

Monthly payment, total interest, and total cost for any fixed-rate loan.

BMI Calculator

Body mass index, WHO category, and your healthy weight range.

Percentage Calculator

Percent of a number, percent one number is of another, and percent change.

JSON Formatter & Validator

Format, validate, and minify JSON with precise error messages.

Word Counter

Words, characters, sentences, paragraphs, and reading time — live.

Merge PDF

Combine several PDF files into one, in any order.

Image Compressor

Shrink image file size with a live quality preview.