About TradeCalc

Free, accurate calculators built on the same standards and code tables trade professionals rely on every day.

What is TradeCalc?

TradeCalc is a free reference tool for electricians, HVAC technicians, plumbers and general contractors. Every calculator is built on published standards: NEC 310.15 ampacity tables, ACCA Manual J load calculation methods, and industry-standard construction estimating formulas.

Our Mission

Trade work demands quick, reliable answers in the field. We built TradeCalc to give professionals and serious DIYers instant access to code-referenced calculations without having to flip through code books or manually work through formulas. Every result includes the formula used and the code reference, so you can verify the math yourself.

Disclaimer

TradeCalc results are intended as a professional starting point and reference tool. They do not replace a full engineering analysis, a licensed professional’s judgment, or the requirements of the current adopted code edition in your jurisdiction. Always verify results before finalizing any design, specification or installation. Local amendments, environmental conditions and project-specific factors may affect the correct answer.

Contact

Questions, corrections or suggestions? Email us at hello@numbersplainly.com.