📍 ຕົວຄິດໄລ່​ໄລຍະ​ທາງ​ລະຫວ່າງ​ຈຸດ​ສອງ​ຈຸດ

ກ່ຽວ​ກັບ​ເຄື່ອງ​ຄິດໄລ່​ນີ້

This calculator finds the straight-line distance between two points (x₁, y₁) and (x₂, y₂) using the distance formula, and also reports the horizontal change (Δx), the vertical change (Δy), and the midpoint of the segment, with a plot of the two points.

The distance formula, d = √((x₂ − x₁)² + (y₂ − y₁)²), is simply the Pythagorean theorem applied to a grid: the horizontal and vertical gaps are the two legs of a right triangle and the distance is the hypotenuse. Between (0, 0) and (3, 4), Δx = 3 and Δy = 4, so d = √(3² + 4²) = √(9 + 16) = √25 = 5. Because the differences are squared, the order of the points does not change the result, and negative coordinates work fine.

This is the everyday tool for map distances, the length of a line segment, the magnitude of a vector, and nearest-neighbour comparisons in data. Any two points on a plane have exactly one straight-line distance between them.