Four Quadrants
Signed (+X, +Y) Down to (−X, −Y)
Inspect symmetry, center-referenced CAD sketches, and two-axis offsets around a centered physical datum.
Calibrated Cartesian Plane · (±X, ±Y) & Polar (r, θ)
Interactive 4-Quadrant Coordinate & Vector Grid
Click or drag anywhere on the calibrated center-origin plane to measure signed X/Y offsets, Euclidean vector distance r, and polar angle θ from 0° to 360°.
96.0 PPI
X Coordinate+3.00 cm
Y Coordinate+2.00 cm
Distance (r)3.61 cm
Polar Angle (θ)33.7°
Active QuadrantI (+, +)
Click or drag anywhere inside the coordinate grid to place the vector tip relative to the center origin (0, 0).
Polar Math
Euclidean r = √(X² + Y²)
Simultaneously outputs Cartesian coordinates and polar magnitude plus counterclockwise angle θ in degrees.
True Screen Scale
Metric, Inch & Pixel Grids
Grid lines automatically adapt to 10 mm metric intervals, 0.5 in imperial spacing, or 50 CSS pixels using your saved PPI.