The two great lines
Before zones and grids, the classical Vastu tradition draws two lines through a site: north to south, and east to west. An aligned building — its walls parallel to these axes — receives the directions cleanly, each face belonging wholly to one direction. A rotated building mixes them: an "east" wall starts borrowing from the south-east or north-east, and every later reading has to account for that.
Reading the alignment
Enter the facing degree of the building. The tool computes the offset from the nearest cardinal axis and states it plainly: aligned, lightly rotated, or strongly rotated. The calculator shows the practice's source records alongside, quoting the classical basis for axial alignment rather than summarising it. Knowing your offset first saves confusion in every other tool, because you will know whether your walls and your directions agree.
How to use this tool
Measure the facing of the front wall with the Live compass and enter it. Read the offset in degrees and its interpretation. If the rotation is significant, use degree-based tools such as the 16 Zones and the Degree Ring rather than assuming each wall equals one direction.
FAQ
Q. My building is rotated about 20°. Is that a defect? It is a fact to work with, not a verdict. It mainly changes how you must map rooms to zones — by degrees, not by walls.
Q. Which wall do I measure? The wall holding the main entrance, measured from inside facing out.
Q. What counts as aligned? The closer to 0° offset the cleaner; within a few degrees, walls and directions track each other closely.
The classical basis appears with each calculation result, quoted from the practice's source records.