Informational estimates
These free tools provide general information. Results depend on your inputs and the assumptions explained on each page. They are not a warranty of performance, a safety certification or professional engineering advice.
Safe use
Follow your appliance instructions and local installation requirements. Do not use a cooking timer as a substitute for a food thermometer. Consult a qualified installer for heating, cooling and water-heating equipment selection.
Accuracy and availability
We aim to explain methods clearly, but errors and service interruptions can occur. Check important results independently before purchasing equipment or making safety-related decisions.
Use of the website
You may use these tools for personal and professional estimates. Do not interfere with the service or present an estimated result as a certified assessment. Third-party references remain the responsibility of their respective publishers.
Last updated: 2026-09-15