United States calculator
Generate a centered fishmouth tube-coping profile
Calculate an unwrapped centered tube-coping fishmouth profile from branch diameter, main-tube diameter and intersection angle using U.S. inch defaults.
Tube diameters • angle • unwrap points
Calculator inputs
Tube Coping Template Calculator results
How this Tube Coping Template Calculator works
The branch circumference is sampled by angle. At each point, the penetration depth follows the intersecting-cylinder geometry and is converted to an unwrapped paper-template coordinate.
Important: Verify fit on scrap material before cutting. Real fabrication requires allowance for wall thickness, kerf, weld gap, offset and joint orientation.
What assumptions should I verify?
Verify every entered quantity, rate, unit, product specification and local requirement before relying on the estimate. U.S. conventions are primary where location matters.
Is information sent anywhere?
No. Calculations run locally in the browser and this calculator sends no entered information to a remote service.