Construction Calculators

This section focuses on clear, field-tested math for common construction tasks: concrete volumes, rebar takeoffs, brick counts, roof pitch and rafter lengths, and more. The goal is to replace guesswork with transparent assumptions that you can adjust to match site conditions. Each calculator uses straightforward formulas and sensible defaults, then formats results so they are easy to scan on a phone in bright daylight or with gloves on.

Outputs are estimates, not engineered drawings. Materials vary by manufacturer and region; codes and best practices differ; and waste factors depend on crew experience, layout, and weather. Treat the numbers as a solid baseline. Cross-check against supplier datasheets, local code, and your foreman’s guidance. When tolerances are tight, round up for cuts, laps, splices, and off-cuts, and document what you used so repeat orders are faster.

We design for speed and privacy. Calculations run locally in your browser and are never sent to a server. Pages cache efficiently so tools load quickly on spotty connections; once opened, they continue to work offline until you refresh. Interfaces maintain large tap targets, high contrast, and keyboard support for accessibility. The compact chip list helps you jump between tools with minimal scrolling, while copy stays concise and skimmable.

Good planning reduces downtime. Measure carefully, confirm units, and sanity-check extreme values before placing orders. When you’re ready to plan another task, return here and pick the next calculator from the list.