Guides

The reasoning layer beside the calculators: each guide explains a task, shows the working, and hands you to the tool that does it.

Concrete

How Much Concrete Do I Need?
Step-by-step method to measure, calculate and order the right amount of concrete for slabs, footings, post holes and more.
14 min · Upd 2026-09-12
Uses: Concrete Slab Calculator

All concrete guides →

Roofing

Roof Pitch Explained: How to Measure, Calculate & Convert Roof Pitch
What roof pitch is, how to measure it on a real roof, and how to turn rise and run into X/12, degrees, percentage slope and the multiplier that gives roof area.
14 min · Upd 2026-09-15
Uses: Roof Pitch Calculator

All roofing guides →