20 free construction calculators built to make on-site and pre-quote estimating fast, accurate and hassle-free.
Construction Calculators was built to solve a simple, everyday problem: estimating materials for a building job usually means digging up formulas, unit conversions, and a calculator app — or just guessing. This site puts 20 purpose-built calculators in one place, each using standard, industry-accepted construction formulas, so you get a reliable estimate in seconds.
Every calculator on this site runs entirely in your browser — nothing you type is uploaded to a server. We built this as part of a small family of free, privacy-first tools, alongside an invoice generator, PDF utilities, and a passport photo maker, all built by Pravesh Singhal.
This site was built by Pravesh Singhal, who also runs a small network of free, privacy-first browser tools including an invoice maker and PDF tools — see all of them at praveshsinghal.com.
No. Every calculation runs entirely in your browser. Nothing you type is sent to a server or saved by us.
No — every calculator is free with unlimited use. The site may show non-intrusive ads to cover hosting costs.
Yes! Use the Contact Us page to suggest a calculator and we'll consider adding it.