Note: Fullscreen only works with Turbowarp and HQ Pen enabled. https://turbowarp.org/922876543?hqpen This project calculates how many centimeters the stage is, even in fullscreen. You can even mess with the stage size and it will still detect it.
This is my last season 1 project. Credits to @TestMuffin for stage size detector Credits to @ChuckSploder for fullscreen detector PS: Measures are only accurate if you're using a 1080p monitor. My PC monitor is about 52x29 cm.