This content is licensed under Creative Commons Attribution/Share-Alike License 3.0 (Unported). That means you may freely redistribute or modify this content under the same license conditions and must attribute the original author by placing a hyperlink from your site to this work https://planetcalc.com/4313/. Also, please do not modify any references to the original work (if any) contained in this content.
Calculator expresses a given length through the different units. For example, 2 meters 17 centimeters is 21 decimeter 7 centimeters or 217 centimeters or 2170 millimeters. So these tasks - to express the length through the different units - can often be found in math textbooks for 2-4 graders, so it can be useful for such tasks.