This tool provides three dedicated calculators to measure the distance between two points in different contexts: on a flat 2D plane, within a 3D space, and across the curved surface of the Earth. It is designed for students, engineers, logistics planners, and anyone needing precise spatial measurements for analysis, planning, or problem-solving.

• 2D Distance Calculator: Computes the straight-line distance between two points on a flat plane using the Pythagorean theorem. It also provides the slope, angle, and line equation connecting the points.
• 3D Distance Calculator: Calculates the direct distance between two points in three-dimensional space, extending the 2D formula to include the Z-axis coordinate.
• Geographical Distance Calculator: Determines the distance between two locations using their latitude and longitude. It employs Lambert's formulas, which model the Earth as an ellipsoid for greater accuracy over long distances than simple spherical models.
• Multiple Input Formats: The geographical calculator accepts coordinates in both degree-minute-second format (with compass directions) and decimal format, providing flexibility for different data sources.
• Clear Visual Output: The 2D calculator includes a graphical plot of the points on a coordinate plane alongside the numerical result and step-by-step solution.