Engineering Tools
PCB Unit Converters
Convert PCB dimensions, board area, nominal copper weight and temperature.
Formula and worked example
Method. Length factors are exact: 1 mil = 0.0254 mm and 1 inch = 25.4 mm. Area factors are squared. Temperature uses an affine conversion.
Assumptions. Enter a value and select its source and destination units. Copper uses the nominal approximation 1 oz/ft² ≈ 34.79 µm.
Example. 1,000 mil = 1 inch, and 0.03479 mm nominal copper thickness ≈ 1 oz/ft².