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 categories, concrete, electrical (NEC 2023 compliant), HVAC, plumbing, framing, landscaping, home improvement, and unit conversion. Every page loads in under a second. No signup. No popups. No ads inside the calculators themselves. A few things I tried to do differently: → Depth over breadth. Competitors like OmniCalculator have thousands of calculators but a few sentences of guidance on each. I focused on specific use cases with real 2026 pricing and code references. → Mobile-first. Contractors use these on phones while standing in a lumber yard. Every calculator is designed for one-handed operation. → The 2026 stuff nobody has. EV charger wire sizing, heat pump sizing, gas-to-electric conversion, and labor burden for contractors who need to know their true billing rate. It's 100% free and I'd genuinely love feedback from the PH community — especially from anyone who works in construction or does DIY home projects. What's missing? What's wrong? What would you use? Thanks for taking a look 🙏

TradeCalc

92 free calculators for builders, contractors & DIY

92 free calculators for builders, contractors & DIY