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TradeCalc is a free library of 92 construction and home improvement calculators — concrete, electrical (NEC 2023 compliant), HVAC, plumbing, framing, and more.
Built for contractors and DIY builders who want instant answers without signups, popups, or ads blocking the tool. Includes the new 2026 stuff most sites miss: EV charger wire sizing, heat pump sizing, kitchen/bathroom remodel costs with current prices, and labor burden for contractors.
TradeCalc92 free calculators for builders, contractors & DIY
Ammar Ranaleft a comment
I'm Ammar, the maker of TradeCalc. This started with a frustration I kept running into every time I needed a quick construction calculation online, I'd land on a site that was slow, covered in popups, asked for my email, or used pricing data from 2019. The calculators worked, but the experience was painful, especially on a phone. So I built the site I wanted to use. 92 calculators across 10...
TradeCalc92 free calculators for builders, contractors & DIY