Construction calculators

Pick a calculator below. Each one shows its formula and assumptions in plain language, not just a number.

All calculators

Gravel Calculator

Figure out tons and cubic yards of gravel, crushed stone, sand, or topsoil for any area.

Fence Calculator

Work out posts, rails, pickets, and concrete bags for any fence length and post spacing.

Roof Pitch Calculator

Convert rise and run into pitch ratio, angle in degrees, slope factor, and rafter length.

More calculators coming later

This site currently focuses on three of the most commonly searched construction estimates. If they prove useful, more calculators (concrete, paint, mulch, decking, drywall) will be added to this same directory using the same approach: a tested formula, a worked example, and a plain-language explanation. See the Methodology page for how the numbers behind each calculator are sourced.