HVAC Duct Calculator Watch

Estimate duct air velocity from airflow and duct dimensions directly on your wrist. Choose round or rectangular ductwork, enter CFM and dimensions with the Digital Crown, and view FPM immediately. Save named duct calculations for different rooms or jobs. Reload, rename, update, and delete stored calculations at any time. • Round and rectangular ducts • CFM and FPM calculations • Equivalent round diameter • Persistent job records • No internet required Field estimate only. Verify final system design requirements.