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TradeCalc
92 free calculators for builders, contractors & DIY
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.
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 🙏
About TradeCalc on Product Hunt
“92 free calculators for builders, contractors & DIY”
TradeCalc was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #204 on the daily leaderboard. 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.
On the analytics side, TradeCalc competes within Productivity, Home and SaaS — topics that collectively have 861.1k followers on Product Hunt. The dashboard above tracks how TradeCalc performed against the three products that launched closest to it on the same day.
Who hunted TradeCalc?
TradeCalc was hunted by Ammar Rana. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of TradeCalc including community comment highlights and product details, visit the product overview.
Ammar Rana