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We’ve worked hard to build a powerful and accurate set of construction calculators for the jobsite. This update includes improvements, fixes, and refinements to make calculations faster and more reliable. 🎉 As a thank-you for supporting us early, early users can enjoy the app for free. Thank you for using HB Construction Calculator!
Construction calculators for carpentry, electrical, pipe, HVAC, concrete & more.
🏗️ **HB CONSTRUCTION CALCULATOR — BUILT FOR THE JOBSITE** HB Construction Calculator is a powerful **construction calculator for contractors and tradespeople**. Do feet-inch-fraction math the way a tape measure reads, convert imperial and metric measurements in one tap, and switch between **8 specialized construction calculators** for carpentry, electrical, plumbing, HVAC, concrete, excavation, and estimating. ✅ Works fully offline ✅ No login required ✅ No paywall ✅ 8 calculators in one app ✅ Built by Handy Bro (HB) --- 🧰 **8 CONSTRUCTION CALCULATORS IN ONE APP** 📐 **Advanced Cal** Roof pitch, rise, run, and diagonal calculations. Calculate hip and valley rafters, jacks, stairs, circles, board feet, studs, blocks, drywall, footings, roofing squares, and more. 🪚 **Master 5** An everyday carpentry calculator for stairs, arcs, irregular pitch and jack calculations, weight, cost, and paperless tape measurements. ⚡ **Electrical Calculator** Calculate Kirchhoff and Ohm equations, wire size, voltage drop, conduit fill, motor full-load current, motor protection, grounding, and more. 🔧 **Pipe & Plumbing Calculator** Calculate offsets, rolling offsets, fitting allowances, cut lengths, 45° fittings, flow, pressure, pipe size, and other common plumbing measurements. 🧱 **Concrete & Masonry Calculator** Calculate cubic yards, concrete bags, footings, walls, blocks, rebar, drop, stairs, and truck loads. 🌬️ **HVAC / Sheet Metal Calculator** Calculate duct takeoffs, OGEE offsets, Fan Laws, velocity pressure, FPM, Law of Cosines, stretch-outs, and other HVAC and sheet metal measurements. 🚜 **Excavation & Grading Calculator** Calculate cut and fill, slopes, percent grade, bank/loose/compacted volumes, swell, shrink, and truck loads. 📦 **Material Estimator** Estimate material quantities and coverage for paint, tile, decking, fencing, studs, blocks, flooring, sheet goods, brick, gravel, and project costs. --- 📏 **FEET • INCHES • FRACTIONS — THE WAY YOU WORK** Enter measurements the same way you call them out on the jobsite. For example: **12 ft 6 3/8 in** No need to convert everything to decimals first. Quickly calculate and convert: • Feet and inches • Fractions • Yards • Meters • Square units • Cubic units • Imperial ↔ Metric All without leaving the calculator pad. --- 🕘 **SAVE YOUR CALCULATIONS** Finished an important calculation? Save it in **History** and reopen it later when you need it. Your jobsite calculations stay organized and easy to find. --- ⭐ **CHOOSE YOUR DEFAULT CALCULATOR** Open **Tools**, choose the calculator you use most, and make it your default. Your selection stays saved, so the calculator you need is ready the next time you open the app. --- 👷 **BUILT FOR TRADES — NOT SPREADSHEETS** HB Construction Calculator is made for: 🔨 Contractors 🪚 Carpenters ⚡ Electricians 🔧 Plumbers 🌬️ HVAC technicians 🧱 Concrete & masonry crews 🚜 Excavation & grading crews 📋 Estimators 🏗️ Construction professionals Whether you're measuring lumber, calculating electrical loads, laying out pipe, estimating concrete, sizing ductwork, grading a site, or preparing a material takeoff, **HB Construction Calculator puts the tools you need in your pocket.** --- 🔒 **SIMPLE. PRIVATE. READY FOR THE JOBSITE.** ✓ Fully offline ✓ No account ✓ No login ✓ No paywall ✓ No unnecessary setup Just open the app and start calculating. **HB Construction Calculator — from Handy Bro.** 🌐 Learn More: https://www.handybro.app 📄 Terms of Use: https://www.handybro.app/construction_calculator/terms 🔒 Privacy Policy: https://www.handybro.app/construction_calculator/privacy