Distance Calculator

Distance Calculator turns two points into the straight-line distance between them — completely offline. Type the coordinates and the distance, the deltas and the midpoint appear the moment you finish, alongside a live plot of the two points and the segment joining them.

TWO MODES
• 2D — the distance between (x1, y1) and (x2, ya2)
• 3D — the distance between (x1, y1, z1) and (x2, y2, z2)
Switch between them with a single tap.

WHAT IT WORKS OUT
• Distance — the straight-line length between the points
• Δx, Δy (and Δz in 3D) — the gap along each axis
• Midpoint — the point exactly halfway between them
• Slope and angle of the connecting segment (2D)
• A live coordinate plot of both points, the segment and the midpoint (2D)

BUILT ON PYTHAGORAS
The distance is the Pythagorean theorem in coordinates: d = √(Δx² + Δy²) in 2D, and d = √(Δx² + Δy² + Δz²) in 3D. The familiar 3-4-5 and 5-12-13 right triangles fall straight out of it.

EXAMPLES BUILT IN
An Examples tab loads ready-made point pairs — the 3-4-5 and 5-12-13 triangles, negative coordinates, a horizontal segment and a couple of 3D pairs — straight into the calculator so you can see every step worked out.

LEARN AS YOU GO
A plain-language Learn tab explains the distance formula as Pythagoras in coordinates, how it extends from 2D to 3D, and how to find the midpoint — handy for algebra, geometry, surveying or navigation.

PRIVACY
The app collects no personal data and works fully offline — your numbers never leave your device. Ads are served by Google AdMob, which may use an advertising identifier as described in Google's policies.

IMPORTANT
This app is provided for general and educational use. Always double-check results before relying on them for schoolwork, engineering or construction decisions.

Light and dark themes, a tiny download, and no clutter. Download Distance Calculator and measure with confidence.