About noongeum.

Simple tools for small, everyday questions.

A focused toolbox

noongeum brings five browser-based measuring tools together: a ruler, a length measure, a rectangle calculator, a circle calculator and a protractor. Each tool includes a guide that explains its measurements and limitations.

Calculations you can inspect

Length conversion uses 1 inch = 2.54 cm. Rectangle area uses width × height, while circle calculations use π from JavaScript Math.PI. Displayed results are rounded; physical measurement accuracy also depends on calibration and alignment.

Using the tools

No account or installation is needed. Measurements are calculated in your browser. Calibration can be stored locally. These tools are for everyday reference and should be checked against appropriate instruments whenever accurate physical measurements are essential.