Thermal Growth calculates precise thermal expansion offsets for machining and inspection. Enter your target size, material, and temperature to instantly see the corrected dimension at your chosen reference temperature.
Even small temperature differences can shift a part’s measured size. This tool removes the guesswork by applying accurate expansion coefficients from real engineering materials, helping machinists hit critical tolerances with confidence.
Built with a clean, distraction-free interface, the app supports mm/°C and inch/°F, light and dark modes, and works fully offline. Whether you’re on a CNC machine, at the bench, or inspecting parts, Thermal Growth gives you reliable results instantly.

Thermal Growth applies standard engineering formulas to calculate precise dimensional offsets caused by temperature changes. Enter size, temperature, and material to instantly get the corrected dimension at your chosen reference temperature.

Includes accurate thermal expansion coefficients for metals commonly used in machining—steel, stainless steel, aluminium alloys, titanium, brass, copper, tool steels, and more. Values are sourced from trusted engineering data.

Designed for real workshop environments with a clear UI, large readable output, light/dark modes, and support for mm/°C and inch/°F. Perfect for CNC operators, metrology labs, and general machining tasks.

No internet required. All calculations and data are stored on-device for instant results wherever you work.