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Free engineering tools

Convert units, open CAD and 3D files, calculate loads, and compare materials. Start with the task you need.

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Convert a pressure reading

Convert MPa, bar, psi and kgf/cm²; choose decimal or scientific display.

Open tool →Example: 1 MPa → 10 bar. Unit conversion does not change gauge/absolute reference.

Open STL or STEP without CAD

Open a file locally to inspect its orientation, section and size. Format-specific limits apply.

Open tool →An STL may not declare units. Confirm the intended scale with the source.

STL / OBJ · STEP / STP

Calculate beam deflection and bending

Choose the support/load diagram, then enter span, load, section and material. Check deflection separately from stress.

Open tool →See the illustrated worked example and formula. This is not a certification of the complete structure.

Learn with diagrams

Compare aluminium, steel, plastic and wood

Compare up to three of 206 materials. For A5052 and other grades, choose product, temper and thickness before applying reference values.

Open tool →Density, modulus and strength differ. Reference ranges are not guaranteed ratings or allowable stresses.