P21 STEP
File conversion

Convert P21 to STEP

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Is it possible to convert P21 to STEP?
Yes - P21 converts to STEP.

Not a real conversion - .p21, .stp and .step are the SAME ISO 10303-21 format. Renaming .p21 to .step is enough for viewers that filter by extension.

Also to STEP: MODEL · X_B · X_T

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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How to convert P21 to STEP

Converting a .P21 file to .STEP lets you open the content in software that prefers the .STEP format, though some details may change compared with the original. We are still putting together the list of programs that handle .P21 files.

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

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