DraftToolbox was founded to provide fast, precise, and completely free calculators for the trades. Our suite of 18 tools covers carpentry and framing, concrete work, piping and plumbing, and shop-floor machining.
Our ongoing mission is to eliminate multi-step blueprint math mistakes by providing clean, ad-supported calculating interfaces that shop technicians, engineers, and DIY builders can run on any smartphone or tablet directly on the job site.
Have a technical feature request, bug report, or scale factor calculation feedback? Reach out to our tool design desk directly via email at: support@drafttoolbox.com