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STL Scale Reference Bar Generator

Another tool I built because I needed it myself

The tool behind those 'cubes to import into lychee for scaling' searches. Pick a scale and a bar length, and I generate an STL ruler bar you can download instantly. It has 5mm tick marks along its length plus an end tab exactly as tall as a figure at that scale. Import it next to any model of unknown scale, measure the model against the ruler in your slicer, and you instantly know what percentage to type in. Generated in your browser — nothing uploaded.

Features

Downloadable STL, generated in your browser
All 16 tabletop scales supported
5mm tick marks plus a figure-height end tab
Ruler lengths from 30 to 100mm
No uploads, no accounts, no cookies

Generator

What you get

A 50mm ruler bar with 5mm ticks and a 32.0mm eye-level end tab. Import it into Lychee or Chitubox and measure your STL against the ticks.

How to use it: import the STL next to your model in Lychee or Chitubox, then measure the model's height in millimetres against the ruler ticks. Match a figure's eye level to the end tab — or just read the ticks directly — then head to the scale engine to work out your percentage. The STL is generated entirely in your browser and never touches a server.

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