Accurate calculators for HVAC, roofing, plumbing, concrete, and contractor business math. Built for the field, used in the office.
Calculate the correct AC or heat pump size for any room or home based on square footage, insulation, and climate zone.
Most PopularSee how much you'll save on energy bills by upgrading to a higher-efficiency HVAC system. Calculates payback period.
HVACRunning a home service business means making dozens of calculations every day — job costing, material estimates, equipment sizing, pricing, and more. TradeCalc Hub puts all of those calculations in one place, free and instantly accessible from any device.
Whether you're an HVAC technician calculating the right tonnage for a new installation, a roofing contractor preparing a bid, or a business owner trying to understand your true labor costs, our calculators are built to match real-world trade workflows.
Our HVAC sizing calculations are based on Manual J load calculation principles from ACCA (Air Conditioning Contractors of America). Roofing cost estimates draw from RSMeans construction data and regional labor surveys. Concrete calculations use standard cubic yard formulas with an industry-standard 10% waste factor. All formulas are reviewed by working trade professionals.
Our calculators provide reliable estimates based on industry-standard formulas. For final project bids, we recommend using calculated estimates as a starting point and adjusting based on your local labor rates, specific site conditions, and material costs. Many contractors use these numbers as a quick gut-check before detailed estimating.
All calculators on TradeCalc Hub are completely free. We support the site through advertising. No account, email, or credit card is ever required.
Absolutely — every calculator is designed to work perfectly on mobile devices. Just bookmark the page you need and pull it up when you're in the field.