Length is a dimension that is defined as the longest extent of anything as measured from end to end (distance). There are several units that are used to measure distance. Some units are centimetre, cubit, feet, millimeter, yard etc. This section involves calculators to find the length of the sides of any 2d or 3d shapes like length of arc, chord etc. You can also calculate the other dimensions such as breadth, width, height etc of these shapes.

The base unit in the International System of Units (SI) to measure length or distance is the metre. One of the oldest units of length or dimension measurement used in the ancient world was the 'cubit'.