3D Printing Unit Converters

Convert common 3D printing and CAD dimension units with millimeter-normalized factors for slicer and calibration consistency.

Explanation

Most 3D-printing tooling normalizes geometry to millimeters. This hub keeps conversions reversible across CAD-export and machine-level units such as microns, mils, and inches.

3d Printing Units pages are organized by conversion direction so mirror leaves remain aligned and comparable.

Read more

Open a family hub to reach leaf pages with direct answers, calculator output, and reverse links built on the same constants.

How to use this hub

  1. Choose a converter family.
  2. If converting to/from grams from a volume unit, select an ingredient.
  3. For pure unit changes (volume↔volume or weight↔weight), use universal conversions.

If your conversion includes grams, you’ll choose an ingredient; otherwise you won’t.

Frequently Asked Questions

Why is millimeter used as base?

Millimeter is the default reference in most slicers and printer firmware toolchains.

What is a mil (thou)?

A mil, also called thou, is one thousandth of an inch.

Can I use tiny decimal values?

Yes. Decimal values are supported for fine layer heights and tolerance checks.